Joystiq.com reports that the Blizzard DotA project is still a work in progress, and that the developers are aiming to launch it around the time of Heart of the Swarm.
"We basically put it back up in the shop and did some massive overhauls to some things, which I'm not going to go into specific detail about," said Chris Sigaty, lead producer of Starcraft 2. "But yeah, we are working on Blizzard Dota, and we do intend to launch it at or around the time of Heart of the Swarm, but the official details will be online later."
The sequel to StarCraft 2: Wings of Liberty, Heart of the Swarm, has no release date, but as late as in March 2011, lead designer Dustin Browder believed the game had about one more year in development.
Blizzard announced their version of DotA back at BlizzCon 2010 and had already a playable demo. Whether the overhauled version resembles any of it, it remains clear that it will pick up the fanbase struggle with Riot Games's League of Legends, S2 Games' Heroes of Newerth and Valve's DotA sequel.
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Joystiq.com - Source