ACS UI Library for iOS is still in beta (the last beta was 6 months ago): https://github.com/Azure/communication-ui-library-ios/blob/main/AzureCommunicationUI/sdk/AzureCommunicationUIChat/CHANGELOG.md
ACS UI Library for Android last beta was 2 years ago: https://github.com/Azure/communication-ui-library-android/blob/main/docs/CHANGELOG_UI_CHAT.md
Microsoft does not recommend using them for production:
https://learn.microsoft.com/en-us/azure/communication-services/quickstarts/ui-library/get-started-chat-ui-library
However, it is completely unclear what Microsoft's commitment is to promoting those SDKs to the official releases, nether the time of the official UI SDK releases.
Are those UI SDKs dead, given no activities on the referenced GitHub repositories above?