update release

Author: dustinxie

changelog/v1.12.1-release-note.md

@@ -3,21 +3,17 @@
 ## Summary
 v1.12.1 is the first maintenance release after the latest release v1.12.0. It
 comes with several important improvements and fixes for the API functionality.
-It also contains an initial release of the w3bstream CLI.
-
-The new w3bstream CLI is a command line tool designed for our w3bstream protocol.
-You can use it to create and manage w3bstream projects on the IoTeX blockchain,
-send and query zk proof message to supported blockchains. 
+It also contains an enhanced configuration of the transaction pool, which would
+double the pool's capacity, allow it to buffer more pending transactions and
+increase the IoTeX blockchain's resilience against large traffic volume.
 
 ## Major Improvements
 1. Correct signature's V value in returned web3 transaction, to fix the transaction
 hash calculation
 2. Support "input" field in web3 request params to increase the compatibility with
 latest web3js standard
-3. Support gasPrice parameter in EstimatedGas API request
-4. Fix ioctl updated failed on macOS
-5. Add `ws` sub-command to the ioctl CLI. Use `ioctl ws` command to create and manage
-w3bstream projects, send and query zk proof messages to supported blockchains
+3. Set gRPC MaxConnectionIdle time to 5 minutes to improve the API server performance
+and responsiveness
 
 ## Upgrade Priority
 v1.12.1 does not have a hardfork, and contains API service improvements. Only API
@@ -40,15 +36,4 @@ nodes should upgrade in order to provide the best up-to-date service
 8. [action] add NewEthSigner() and pass Signer as input to rlpRawHash() and rlpSignedHash() [#3967](https://github.com/iotexproject/iotex-core/pull/3967)
 9. fix Dockerfile [#3970](https://github.com/iotexproject/iotex-core/pull/3970)
 10. [api] support "input" field in web3 request params [#3971](https://github.com/iotexproject/iotex-core/pull/3971)
-11. [evm] correct test [#3980](https://github.com/iotexproject/iotex-core/pull/3980)
-12. remove unused chainIDmetrics() [#3992](https://github.com/iotexproject/iotex-core/pull/3992)
-13. support gasPrice param in estimatedGas API [#3985](https://github.com/iotexproject/iotex-core/pull/3985)
-14. fix ioctl update failed on mac [#3957](https://github.com/iotexproject/iotex-core/pull/3957)
-15. feat(ioctl): support ws configurations [#3986](https://github.com/iotexproject/iotex-core/pull/3986)
-16. feat(ioctl): support w3bstream message committing and querying commands [#3987](https://github.com/iotexproject/iotex-core/pull/3987)
-17. feat(ioctl): support znode project management commands [#3989](https://github.com/iotexproject/iotex-core/pull/3989)
-18. feat(ioctl): default w3bstream endpoint [#3999](https://github.com/iotexproject/iotex-core/pull/3999)
-19. [evm] simplify emvStateDBAdaptor.AccountState() [#4000](https://github.com/iotexproject/iotex-core/pull/4000)
-20. feat(ioctl): support znode code convert [#3994](https://github.com/iotexproject/iotex-core/pull/3994)
-21. [evm] remove unnecessary field from evm.Params [#4006](https://github.com/iotexproject/iotex-core/pull/4006)
-22. feat(ioctl): ioctl standalone version (#4001) [#4001](https://github.com/iotexproject/iotex-core/pull/4001)
+11. set gprc MaxConnectionIdle to 5 min [#4023](https://github.com/iotexproject/iotex-core/pull/4023)