update CHANGELOG.md

packages/web3-core/CHANGELOG.md

@@ -121,7 +121,17 @@ Documentation:
 
 ## [Unreleased]
 
+### Added
+
+-   Web3Subscription constructor accept a Subscription Manager (as an alternative to accepting Request Manager that is now marked marked as deprecated) (#6210)
+
+### Changed
+
+-   Web3Subscription constructor overloading that accept a Request Manager is marked as deprecated (#6210)
+
 ### Fixed
 
 -   Fixed Batch requests erroring out on one request (#6164)
--   Fixed the issue: Subscribing to multiple blockchain events causes every listener to be fired for every registered event (#6210).
+-   Fixed the issue: Subscribing to multiple blockchain events causes every listener to be fired for every registered event (#6210)
+-   Fixed the issue: Unsubscribe at a Web3Subscription class will still have the id of the subscription at the Web3SubscriptionManager (#6210)
+-   Fixed the issue: A call to the provider is made for every subscription object. This means multiple subscription is made at the provider for each subscription object (#6210)