Steam Chat Launches

Valve announces Steam Chat is out of beta and live for all Steam users, set to sow discord among the competition. This page outlines what's new and different, including the ability to carry on conversations in a web browser as well as the Steam client. This post has even more details, and says they plan on extending Steam Chat to mobile devices in the future:
Today we’ve made the new Steam chat features, which have been in beta since June 12th, available to all Steam users. The all-new friends list and chat system makes it easier to chat and play games with your Steam friends.

Thank you to everyone who participated in the beta! We'll continue to improve the new chat system based on your feedback and requests. We've already started working on making it easier to chat from anywhere with a new Steam chat mobile app for iPhone and Android devices.