diff --git a/modules/ingest-user-agent/src/main/java/org/opensearch/ingest/useragent/UserAgentProcessor.java b/modules/ingest-user-agent/src/main/java/org/opensearch/ingest/useragent/UserAgentProcessor.java
index df88e98e7fc4f..45d8ee60ae95c 100644
--- a/modules/ingest-user-agent/src/main/java/org/opensearch/ingest/useragent/UserAgentProcessor.java
+++ b/modules/ingest-user-agent/src/main/java/org/opensearch/ingest/useragent/UserAgentProcessor.java
@@ -352,7 +352,7 @@ public UserAgentProcessor create(
                 deprecationLogger.deprecate(
                     "ecs_false_non_common_schema",
                     "setting [ecs] to false for non-common schema "
-                        + "format is deprecated and will be removed in 8.0, set to true or remove to use the non-deprecated format"
+                        + "format is deprecated and will be removed in 3.0, set to true or remove to use the non-deprecated format"
                 );
             }
 
diff --git a/modules/ingest-user-agent/src/yamlRestTest/resources/rest-api-spec/test/ingest-useragent/20_useragent_processor.yml b/modules/ingest-user-agent/src/yamlRestTest/resources/rest-api-spec/test/ingest-useragent/20_useragent_processor.yml
index c7ab1751d1b0d..a3c9afc02dac4 100644
--- a/modules/ingest-user-agent/src/yamlRestTest/resources/rest-api-spec/test/ingest-useragent/20_useragent_processor.yml
+++ b/modules/ingest-user-agent/src/yamlRestTest/resources/rest-api-spec/test/ingest-useragent/20_useragent_processor.yml
@@ -87,7 +87,7 @@
 
   - do:
       allowed_warnings:
-        - "setting [ecs] to false for non-common schema format is deprecated and will be removed in 8.0, set to true or remove to use the non-deprecated format"
+        - "setting [ecs] to false for non-common schema format is deprecated and will be removed in 3.0, set to true or remove to use the non-deprecated format"
         - "the [os_major] property is deprecated for the user-agent processor"
       ingest.put_pipeline:
         id: "my_pipeline"
diff --git a/plugins/mapper-annotated-text/src/internalClusterTest/java/org/opensearch/index/mapper/annotatedtext/AnnotatedTextFieldMapperTests.java b/plugins/mapper-annotated-text/src/internalClusterTest/java/org/opensearch/index/mapper/annotatedtext/AnnotatedTextFieldMapperTests.java
index ab959d0e7a78d..d03fcd47fe991 100644
--- a/plugins/mapper-annotated-text/src/internalClusterTest/java/org/opensearch/index/mapper/annotatedtext/AnnotatedTextFieldMapperTests.java
+++ b/plugins/mapper-annotated-text/src/internalClusterTest/java/org/opensearch/index/mapper/annotatedtext/AnnotatedTextFieldMapperTests.java
@@ -99,7 +99,7 @@ protected void writeFieldValue(XContentBuilder builder) throws IOException {
 
     @Override
     protected void assertParseMaximalWarnings() {
-        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 8.0");
+        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 3.0");
     }
 
     @Override
diff --git a/qa/mixed-cluster/src/test/java/org/opensearch/backwards/IndexingIT.java b/qa/mixed-cluster/src/test/java/org/opensearch/backwards/IndexingIT.java
index 4746ad35a9406..2e36a352c75dd 100644
--- a/qa/mixed-cluster/src/test/java/org/opensearch/backwards/IndexingIT.java
+++ b/qa/mixed-cluster/src/test/java/org/opensearch/backwards/IndexingIT.java
@@ -323,7 +323,7 @@ public void testSyncedFlushTransition() throws Exception {
                 ResponseException responseException = expectThrows(ResponseException.class, () -> oldNodeClient.performRequest(request));
                 assertThat(responseException.getResponse().getStatusLine().getStatusCode(), equalTo(RestStatus.CONFLICT.getStatus()));
                 assertThat(responseException.getResponse().getWarnings(),
-                    contains("Synced flush is deprecated and will be removed in 8.0. Use flush at _/flush or /{index}/_flush instead."));
+                    contains("Synced flush is deprecated and will be removed in 3.0. Use flush at _/flush or /{index}/_flush instead."));
                 Map<String, Object> result = ObjectPath.createFromResponse(responseException.getResponse()).evaluate("_shards");
                 assertThat(result.get("total"), equalTo(totalShards));
                 assertThat(result.get("successful"), equalTo(0));
diff --git a/rest-api-spec/src/main/resources/rest-api-spec/test/indices.shrink/30_copy_settings.yml b/rest-api-spec/src/main/resources/rest-api-spec/test/indices.shrink/30_copy_settings.yml
index 33bcb18f8afb6..07d5076550889 100644
--- a/rest-api-spec/src/main/resources/rest-api-spec/test/indices.shrink/30_copy_settings.yml
+++ b/rest-api-spec/src/main/resources/rest-api-spec/test/indices.shrink/30_copy_settings.yml
@@ -46,7 +46,7 @@
             index.number_of_replicas: 0
             index.merge.scheduler.max_thread_count: 2
       allowed_warnings:
-        - "parameter [copy_settings] is deprecated and will be removed in 8.0.0"
+        - "parameter [copy_settings] is deprecated and will be removed in 3.0.0"
         - "Parameter [master_timeout] is deprecated and will be removed in 3.0. To support inclusive language, please use [cluster_manager_timeout] instead."
 
   - do:
diff --git a/rest-api-spec/src/main/resources/rest-api-spec/test/indices.split/30_copy_settings.yml b/rest-api-spec/src/main/resources/rest-api-spec/test/indices.split/30_copy_settings.yml
index 5b7f8f9960774..b8e6b54a393b9 100644
--- a/rest-api-spec/src/main/resources/rest-api-spec/test/indices.split/30_copy_settings.yml
+++ b/rest-api-spec/src/main/resources/rest-api-spec/test/indices.split/30_copy_settings.yml
@@ -48,7 +48,7 @@
             index.number_of_shards: 2
             index.merge.scheduler.max_thread_count: 2
       allowed_warnings:
-        - "parameter [copy_settings] is deprecated and will be removed in 8.0.0"
+        - "parameter [copy_settings] is deprecated and will be removed in 3.0.0"
         - "Parameter [master_timeout] is deprecated and will be removed in 3.0. To support inclusive language, please use [cluster_manager_timeout] instead."
 
   - do:
diff --git a/server/src/main/java/org/opensearch/index/mapper/ParametrizedFieldMapper.java b/server/src/main/java/org/opensearch/index/mapper/ParametrizedFieldMapper.java
index a06c3ef88d001..b4fa781090615 100644
--- a/server/src/main/java/org/opensearch/index/mapper/ParametrizedFieldMapper.java
+++ b/server/src/main/java/org/opensearch/index/mapper/ParametrizedFieldMapper.java
@@ -705,7 +705,7 @@ public final void parse(String name, ParserContext parserContext, Map<String, Ob
                 if (Objects.equals("boost", propName)) {
                     deprecationLogger.deprecate(
                         "boost_" + name,
-                        "Parameter [boost] on field [{}] is deprecated and will be removed in 8.0",
+                        "Parameter [boost] on field [{}] is deprecated and will be removed in 3.0",
                         name
                     );
                 }
diff --git a/server/src/main/java/org/opensearch/index/mapper/TypeParsers.java b/server/src/main/java/org/opensearch/index/mapper/TypeParsers.java
index 5c1b1428f6137..30fcba0ae61d3 100644
--- a/server/src/main/java/org/opensearch/index/mapper/TypeParsers.java
+++ b/server/src/main/java/org/opensearch/index/mapper/TypeParsers.java
@@ -155,7 +155,7 @@ public static void parseField(
                 builder.boost(nodeFloatValue(propNode));
                 deprecationLogger.deprecate(
                     "boost_" + name,
-                    "Parameter [boost] on field [{}] is deprecated and will be removed in 8.0",
+                    "Parameter [boost] on field [{}] is deprecated and will be removed in 3.0",
                     name
                 );
                 iterator.remove();
diff --git a/server/src/main/java/org/opensearch/rest/action/admin/indices/RestResizeHandler.java b/server/src/main/java/org/opensearch/rest/action/admin/indices/RestResizeHandler.java
index c84e0ba08ea32..66f1e98228ba3 100644
--- a/server/src/main/java/org/opensearch/rest/action/admin/indices/RestResizeHandler.java
+++ b/server/src/main/java/org/opensearch/rest/action/admin/indices/RestResizeHandler.java
@@ -94,7 +94,7 @@ public final RestChannelConsumer prepareRequest(final RestRequest request, final
             }
             deprecationLogger.deprecate(
                 "resize_deprecated_parameter",
-                "parameter [copy_settings] is deprecated and will be removed in 8.0.0"
+                "parameter [copy_settings] is deprecated and will be removed in 3.0.0"
             );
         }
         resizeRequest.setCopySettings(copySettings);
diff --git a/server/src/test/java/org/opensearch/index/mapper/BooleanFieldMapperTests.java b/server/src/test/java/org/opensearch/index/mapper/BooleanFieldMapperTests.java
index f356c40d71354..5e58e6c3c127e 100644
--- a/server/src/test/java/org/opensearch/index/mapper/BooleanFieldMapperTests.java
+++ b/server/src/test/java/org/opensearch/index/mapper/BooleanFieldMapperTests.java
@@ -62,7 +62,7 @@ protected void minimalMapping(XContentBuilder b) throws IOException {
 
     @Override
     protected void assertParseMaximalWarnings() {
-        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 8.0");
+        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 3.0");
     }
 
     protected void registerParameters(ParameterChecker checker) throws IOException {
diff --git a/server/src/test/java/org/opensearch/index/mapper/DateFieldMapperTests.java b/server/src/test/java/org/opensearch/index/mapper/DateFieldMapperTests.java
index 72944eb7743af..2afd6773b15d4 100644
--- a/server/src/test/java/org/opensearch/index/mapper/DateFieldMapperTests.java
+++ b/server/src/test/java/org/opensearch/index/mapper/DateFieldMapperTests.java
@@ -83,7 +83,7 @@ public void testExistsQueryDocValuesDisabled() throws IOException {
 
     @Override
     protected void assertParseMaximalWarnings() {
-        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 8.0");
+        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 3.0");
     }
 
     public void testDefaults() throws Exception {
diff --git a/server/src/test/java/org/opensearch/index/mapper/KeywordFieldMapperTests.java b/server/src/test/java/org/opensearch/index/mapper/KeywordFieldMapperTests.java
index 7a56143a82afd..71eee7b89693c 100644
--- a/server/src/test/java/org/opensearch/index/mapper/KeywordFieldMapperTests.java
+++ b/server/src/test/java/org/opensearch/index/mapper/KeywordFieldMapperTests.java
@@ -173,7 +173,7 @@ protected void minimalMapping(XContentBuilder b) throws IOException {
 
     @Override
     protected void assertParseMaximalWarnings() {
-        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 8.0");
+        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 3.0");
     }
 
     protected void registerParameters(ParameterChecker checker) throws IOException {
@@ -309,7 +309,7 @@ public void testIndexOptions() throws IOException {
     public void testBoost() throws IOException {
         MapperService mapperService = createMapperService(fieldMapping(b -> b.field("type", "keyword").field("boost", 2f)));
         assertThat(mapperService.fieldType("field").boost(), equalTo(2f));
-        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 8.0");
+        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 3.0");
     }
 
     public void testEnableNorms() throws IOException {
diff --git a/server/src/test/java/org/opensearch/index/mapper/RangeFieldMapperTests.java b/server/src/test/java/org/opensearch/index/mapper/RangeFieldMapperTests.java
index 4c1dc44f801ea..448bb272872ee 100644
--- a/server/src/test/java/org/opensearch/index/mapper/RangeFieldMapperTests.java
+++ b/server/src/test/java/org/opensearch/index/mapper/RangeFieldMapperTests.java
@@ -97,7 +97,7 @@ public void testExistsQueryDocValuesDisabled() throws IOException {
 
     @Override
     protected void assertParseMaximalWarnings() {
-        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 8.0");
+        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 3.0");
     }
 
     protected void registerParameters(ParameterChecker checker) throws IOException {
diff --git a/server/src/test/java/org/opensearch/index/mapper/TextFieldMapperTests.java b/server/src/test/java/org/opensearch/index/mapper/TextFieldMapperTests.java
index 776f2f42780a5..be4379205e960 100644
--- a/server/src/test/java/org/opensearch/index/mapper/TextFieldMapperTests.java
+++ b/server/src/test/java/org/opensearch/index/mapper/TextFieldMapperTests.java
@@ -103,7 +103,7 @@ protected void writeFieldValue(XContentBuilder builder) throws IOException {
 
     @Override
     protected void assertParseMaximalWarnings() {
-        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 8.0");
+        assertWarnings("Parameter [boost] on field [field] is deprecated and will be removed in 3.0");
     }
 
     public final void testExistsQueryIndexDisabled() throws IOException {
diff --git a/test/framework/src/main/java/org/opensearch/index/mapper/MapperTestCase.java b/test/framework/src/main/java/org/opensearch/index/mapper/MapperTestCase.java
index 5634482ab7c6b..420cb5f86e95f 100644
--- a/test/framework/src/main/java/org/opensearch/index/mapper/MapperTestCase.java
+++ b/test/framework/src/main/java/org/opensearch/index/mapper/MapperTestCase.java
@@ -274,7 +274,7 @@ public void testDeprecatedBoost() throws IOException {
         }));
         String type = typeName();
         String[] warnings = new String[] {
-            "Parameter [boost] on field [field] is deprecated and will be removed in 8.0",
+            "Parameter [boost] on field [field] is deprecated and will be removed in 3.0",
             "Parameter [boost] has no effect on type [" + type + "] and will be removed in future" };
         allowedWarnings(warnings);
     }
diff --git a/test/framework/src/main/java/org/opensearch/test/rest/OpenSearchRestTestCase.java b/test/framework/src/main/java/org/opensearch/test/rest/OpenSearchRestTestCase.java
index 9b8a84a5ed842..70dfba204ff9e 100644
--- a/test/framework/src/main/java/org/opensearch/test/rest/OpenSearchRestTestCase.java
+++ b/test/framework/src/main/java/org/opensearch/test/rest/OpenSearchRestTestCase.java
@@ -1244,7 +1244,7 @@ protected void syncedFlush(String indexName, boolean retryOnConflict) throws Exc
         final Builder options = RequestOptions.DEFAULT.toBuilder();
         // 8.0 kept in warning message for legacy purposes TODO: changge to 3.0
         final List<String> warningMessage = Arrays.asList(
-            "Synced flush is deprecated and will be removed in 8.0. Use flush at _/flush or /{index}/_flush instead."
+            "Synced flush is deprecated and will be removed in 3.0. Use flush at _/flush or /{index}/_flush instead."
         );
         final List<String> expectedWarnings = Arrays.asList(
             "Synced flush was removed and a normal flush was performed instead. This transition will be removed in a future version."