# SendBird Chat v3.0.147 (JavaScript) has been released! (2021-03-24)

**URL:** <https://community.sendbird.com/t/sendbird-chat-v3-0-147-javascript-has-been-released-2021-03-24/1948>\
**Category:** New Releases\
**Created:** [March 24, 2021, 7:06pm UTC](https://community.sendbird.com/t/sendbird-chat-v3-0-147-javascript-has-been-released-2021-03-24/1948 "2021-03-24T19:06:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Sendbird](https://sea2.discourse-cdn.com/flex020/user_avatar/community.sendbird.com/sendbird/32/5002_2.png) [@Sendbird](https://community.sendbird.com/u/Sendbird)\
**Post date:** [March 24, 2021, 7:06pm UTC](https://community.sendbird.com/t/sendbird-chat-v3-0-147-javascript-has-been-released-2021-03-24/1948/1 "2021-03-24T19:06:41Z")

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[https://github.com/sendbird/SendBird-SDK-JavaScript/releases/tag/v3.0.147](https://github.com/sendbird/SendBird-SDK-JavaScript/releases/tag/v3.0.147)

v3.0.147(MAR 24, 2021)  
• Added `onChannelMemberCountChanged` and `onChannelParticipantCountChanged` in `ChannelHandler`.  
• Changed `markAsDelivered` policy to remove rate limit timer.  
• Improved stability.