If you have any questions you want answered by Blizzard make sure to grab this opportunity by asking your question through Twitter as Blizzard is having a 'chat with the devs' from 22:00 CET/4 PM EST today.
Use the hashtag #Blizzchat when submitting your question and Blizzard will answer it in a dedicated forum for their answers as there is a character limitation on Twitter. Feel free to share your questions in the comments below.
To submit a question for the Developer Chat, please tweet using the #BlizzChat hashtag between 4:00 p.m. and 5:00p.m. PST on March 12th. Due to the character limitation on responses within Twitter, all answers will be posted on the StarCraft II forums in a dedicated thread.
Links
Battle.net - Source