I’ve found by looking at the source code upcoming new device types and their functionalities in case someone is interested before the official announcement in the next couple of weeks:
WebRTC Transport Provider (Cluster 0x0553):
Enables high-quality, real-time video and audio streaming for smart cameras
Supports various stream types: internal, recording, analysis, and live view
Manages WebRTC sessions, including offer/answer protocol and ICE for NAT traversal
Allows for efficient remote viewing and two-way communication
Chime Cluster (0x0556):
Designed for smart doorbells and other notification devices
Supports multiple customizable chime sounds
Allows users to select active chimes and enable/disable the function
Enables remote triggering of chimes
Enhanced Occupancy Sensing (Cluster 0x0406):
Added Vision-based sensing to existing methods (PIR, Ultrasonic, etc.)
Uses image analysis for occupancy detection
Potentially offers more accurate sensing in complex environments
As these features are marked as "provisional," they may undergo further refinement before final release which in my opinion is unlikely.