Whats system/2 ? 

System/2 is a visual interface for OBS. 
System/2 been started in 2021 and now are on 7.5 version.

What’s inclued? 

System/2 include full window rendering for application .
Chatbox interface, animated reactions for systray and icons.
Multi task switching and overlapping.
Camera support
Clock.

When will it be released? 

System/2 is a proprietary application, it will not be released for public.