https://thenextweb.com/gaming/2018/06/06/steam-might-get-new-chat-features-inspired-by-discord/

If there’s one area where the industry-dominating platform Steam lags behind, it’s in the intricacy and usefulness of its chat function. That’s why reports that it’s bolstering voice chat and groups are encouraging.

The details: A leaked screenshot, originally posted on Twitter and which can now be found on Reddit, appears to show group chat rooms on Steam’s interface.