When looking at the Microsoft Teams roadmap some surprises are good – some quite the opposite.
What are Shared Channels?
This new feature will make it possible to work with other people in a channel by invited an internal or external (in other organizations) members to a Shared Channel. The really big thing is that externals don’t have to switch tenants or to be added with a guest account! This feature is being released under name Microsoft Teams Connect.
It will make collaboration with customers, partners, vendors or in community easier than before – especially on those cases when you need only one channel with chat and files. It can be said that Shared Channels will revolutionize collaboration between organizations.
When Shared Channels was announced at Microsoft Ignite Spring 2021 it was stated to come out in summer 2021. This is no longer the case – roadmap has been recently updated to November 2021.
Vesa Nopanen - Future Work today 
when will Teams upgrade their video platform to include invites and registration. I read it was early April – we are now in late April
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The latest bulletin in Admin Center says that it is starting to become available for users from end of April through end of May.
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