A post up on the TF2's official blog has announced that the next class to receive the make over unlockable treatment will be the mini-gun wielding Heavy class. The team at Valve have opened up the unlockable's design process a bit and have documented some of the design issues faced by Valve's team when considering the Heavy's weapon/class update.

No ETA on when this new content will be made live, again also no word on when such content updates will be made available for the Xbox 360 and PS3 market who are yet to receive any content updates for TF2.