Valve launches all-new Steam chat and Friends beta and it's basically Discord
Valve has launched the beta for an all-new Steam chat and Friends list, and it's basically Discord - even so far as to be usable in a browser as well as the Steam client.
Group chats are the big thing (although updates improve person-to-person chatting too) and they're persistent chat rooms for loads of people, with their own voice chat channels just like Discord. You can even share links to the group chats just like Discord.