New features have been added to Twitch, but an important part of it's history has been closed.
Twitch.TV was originally a secondary site to live video streaming site Justin.TV. It seems that no one involved was aware of exactly how huge Twitch would become, as JTV has recently announced it is closing down so Twitch Interactive, Inc. can focus all it's resources to Twitch.TV. The official announcement makes sure to note that sites like YouTube and Ustream are alternatives to live streaming for those JTV users who are not interested in video game related content. All of this is in the light of the recent news of Twitch being purchased by Google.
According to the site, JTV accounts can be transferred over to Twitch before September 5th, 2014. Those JTV users with Pro accounts will also be refunded.
As for new Twitch features, the first is Chat Mentions. Similar to making a mention on Twitter, you can mention a user in a chat room by placing the '@' before the username, which will then highlight your chat message to the mentioned user.
And while not so much a feature, Twitch Turbo now has more payment options. Quite useful for those Twitch members outside of the US, or for those of you who don't know where to spend those hard earned Bitcoins...