DOTA 2 official Trailer is released by Valve yesterday. This is a fantasy strategy game which is under development in Valve Studios. The game is officially announced in October 2010. It is a sequel game to WarCraft 3 game.
DOTA 2 new game is due for both PC and MAC and is going to be available on retail and steam. DOTA 2 release date will be in this Fall 2011.
Here is the DOTA 2 Trailer