The Blizzard team revealed that a major content update will be added to the beta sometime in mid-April. That update will add some Achievements to the game for the first time along with some improvements for voice chat and "a whole lot more." You can expect more maps to be added to the beta including some for 3v3 and 4v4 player matcches. In addition the Mac beta client should also be released in April and the team also hopes to release a beta version of the game's map editor around the end of April. The chat transcript has tons of other info about the beta and is pretty much a must read.
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