The Teams new video experience is currently rolling out, which will add important new features to your video calls. The main change is that Teams video calls will now start in a window separate from your main Teams window. Additionally,you can now see up to 49 users on the same screen and use the new Together Mode, which places all participants in the same virtual space.
Teams is adding a new way to start Teams channel conversations. Instead of a chat box like in 1:1 chats, you will see a New Conversation button instead. Clicking this button will reveal the chat box. Visit our Teams Guide for more details on these new features.