We will be holding our next developer chat on Twitter on Saturday, July 17, at 2:00 a.m. CEST with World of Warcraft's systems design team. This chat session will focus on the recently-announced talent specialization and Mastery system changes coming in Cataclysm: Cataclysm Class & Mastery Systems Update

We'll be taking questions live through Twitter, so be sure to sign up for a Twitter account at https://twitter.com/signup and follow @Warcraft to participate.

To submit a question for the developer chat, please tweet using the #BlizzChat hashtag between 2:00 a.m. and 3:00 a.m. CEST on July 17. Due to Twitter's character limitations, all answers will be posted in a dedicated thread on the World of Warcraft forums.