diff --git a/specification/eventgrid/resource-manager/Microsoft.EventGrid/preview/2018-09-15-preview/EventGrid.json b/specification/eventgrid/resource-manager/Microsoft.EventGrid/preview/2018-09-15-preview/EventGrid.json
index 5242c5f163ce..e6356ff4740c 100644
--- a/specification/eventgrid/resource-manager/Microsoft.EventGrid/preview/2018-09-15-preview/EventGrid.json
+++ b/specification/eventgrid/resource-manager/Microsoft.EventGrid/preview/2018-09-15-preview/EventGrid.json
@@ -2101,6 +2101,7 @@
                         "Failed"
                     ],
                     "type": "string",
+                    "readOnly": true,
                     "x-ms-enum": {
                         "name": "DomainProvisioningState",
                         "modelAsString": true
@@ -2108,7 +2109,8 @@
                 },
                 "endpoint": {
                     "description": "Endpoint for the domain.",
-                    "type": "string"
+                    "type": "string",
+                    "readOnly": true
                 },
                 "inputSchema": {
                     "description": "This determines the format that Event Grid should expect for incoming events published to the domain.",
@@ -2428,6 +2430,26 @@
             },
             "x-ms-discriminator-value": "StorageBlob"
         },
+        "NumberNotInAdvancedFilter": {
+            "description": "NumberNotIn Filter",
+            "type": "object",
+            "allOf": [
+                {
+                    "$ref": "#/definitions/AdvancedFilter"
+                }
+            ],
+            "properties": {
+                "values": {
+                    "description": "The set of filter values",
+                    "type": "array",
+                    "items": {
+                        "format": "double",
+                        "type": "number"
+                    }
+                }
+            },
+            "x-ms-discriminator-value": "NumberNotIn"
+        },
         "NumberLessThanAdvancedFilter": {
             "description": "NumberLessThan Filter",
             "type": "object",
@@ -2588,6 +2610,25 @@
             },
             "x-ms-discriminator-value": "StringEndsWith"
         },
+        "StringContainsAdvancedFilter": {
+            "description": "StringContains Filter",
+            "type": "object",
+            "allOf": [
+                {
+                    "$ref": "#/definitions/AdvancedFilter"
+                }
+            ],
+            "properties": {
+                "values": {
+                    "description": "The set of filter values",
+                    "type": "array",
+                    "items": {
+                        "type": "string"
+                    }
+                }
+            },
+            "x-ms-discriminator-value": "StringContains"
+        },
         "AdvancedFilter": {
             "description": "Represents an advanced filter that can be used to filter events based on various event envelope/data fields.",
             "type": "object",
@@ -2599,6 +2640,7 @@
                     "description": "Represents the filter operator",
                     "enum": [
                         "NumberIn",
+                        "NumberNotIn",
                         "NumberLessThan",
                         "NumberGreaterThan",
                         "NumberLessThanOrEquals",
@@ -2607,7 +2649,8 @@
                         "StringIn",
                         "StringNotIn",
                         "StringBeginsWith",
-                        "StringEndsWith"
+                        "StringEndsWith",
+                        "StringContains"
                     ],
                     "type": "string",
                     "x-ms-enum": {
diff --git a/specification/eventgrid/resource-manager/readme.md b/specification/eventgrid/resource-manager/readme.md
index 3b640b030cfb..6a65c9ca615f 100644
--- a/specification/eventgrid/resource-manager/readme.md
+++ b/specification/eventgrid/resource-manager/readme.md
@@ -26,7 +26,17 @@ These are the global settings for the Azure EventGrid API.
 
 ``` yaml
 openapi-type: arm
-tag: package-2018-05-preview
+tag: package-2018-09-preview
+```
+
+
+### Tag: package-2018-09-preview
+
+These settings apply only when `--tag=package-2018-09-preview` is specified on the command line.
+
+``` yaml $(tag) == 'package-2018-09-preview'
+input-file:
+- Microsoft.EventGrid/preview/2018-09-15-preview/EventGrid.json
 ```
 
 
@@ -149,12 +159,22 @@ go:
 
 ``` yaml $(go) && $(multiapi)
 batch:
+  - tag: package-2018-09-preview
   - tag: package-2018-05-preview
   - tag: package-2018-01
   - tag: package-2017-09-preview
   - tag: package-2017-06-preview
 ```
 
+### Tag: package-2018-09-preview and go
+
+These settings apply only when `--tag=package-2018-09-preview --go` is specified on the command line.
+Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
+
+``` yaml $(tag) == 'package-2018-09-preview' && $(go)
+output-folder: $(go-sdk-folder)/services/preview/eventgrid/mgmt/2018-09-15-preview/eventgrid
+```
+
 ### Tag: package-2018-05-preview and go
 
 These settings apply only when `--tag=package-2018-05-preview --go` is specified on the command line.
@@ -210,10 +230,24 @@ output-folder: $(azure-libraries-for-java-folder)/azure-mgmt-eventgrid
 
 ``` yaml $(java) && $(multiapi)
 batch:
+  - tag: package-2018-09-preview
   - tag: package-2018-05-preview
   - tag: package-2018-01
 ```
 
+### Tag: package-2018-09-preview and java
+
+These settings apply only when `--tag=package-2018-09-preview --java` is specified on the command line.
+Please also specify `--azure-libraries-for-java=<path to the root directory of your azure-sdk-for-java clone>`.
+
+``` yaml $(tag) == 'package-2018-09-preview' && $(java) && $(multiapi)
+java:
+  namespace: com.microsoft.azure.management.eventgrid.v2018_09_15_preview
+  output-folder: $(azure-libraries-for-java-folder)/eventgrid/resource-manager/v2018_09_15_preview
+regenerate-manager: true
+generate-interface: true
+```
+
 ### Tag: package-2018-05-preview and java
 
 These settings apply only when `--tag=package-2018-05-preview --java` is specified on the command line.
diff --git a/specification/eventgrid/resource-manager/readme.ruby.md b/specification/eventgrid/resource-manager/readme.ruby.md
index e71ecf40468d..172f6b2f92d6 100644
--- a/specification/eventgrid/resource-manager/readme.ruby.md
+++ b/specification/eventgrid/resource-manager/readme.ruby.md
@@ -12,12 +12,24 @@ azure-arm: true
 
 ``` yaml $(ruby) && $(multiapi)
 batch:
+  - tag: package-2018-09-preview
   - tag: package-2018-05-preview
   - tag: package-2018-01
   - tag: package-2017-09-preview
   - tag: package-2017-06-preview
 ```
 
+### Tag: package-2018-09-preview and ruby
+
+These settings apply only when `--tag=package-2018-09-preview --ruby` is specified on the command line.
+Please also specify `--ruby-sdks-folder=<path to the root directory of your azure-sdk-for-ruby clone>`.
+
+``` yaml $(tag) == 'package-2018-09-preview' && $(ruby)
+namespace: "Azure::EventGrid::Mgmt::V2018_09_15_preview"
+output-folder: $(ruby-sdks-folder)/management/azure_mgmt_event_grid/lib
+```
+
+
 ### Tag: package-2018-05-preview and ruby
 
 These settings apply only when `--tag=package-2018-05-preview --ruby` is specified on the command line.