https://wccftech.com/valve-launches-beta-new-steam-chat/

Valve has released a beta for its all-new Steam chat with new features, including a revamped friend list and chat system.

The new features are only available for those in the beta. The option to opt-in into this beta can be found in the Steam account settings. New features include a modernized chat experience, a more flexible friend list, group chats built for gaming, and more.