Game Informer has the first bits of information regarding the game, stating that the game runs of Valve's much-hailed Source engine. Voice chat is also included with the game as well, along with gameplay that seems to be quite faithful to the series' roots. Steam-works achievements will be available as well to coincide with the title's vast community.
DotA 2 also will be having one the series' lead designers on Valve's iteration. IceHog, as he called, was a lead developer/designer before he was hired by Valve last year. He previously was working on maintaining the recent version of the game, DotA: All Stars.
If screens or videos are released, Gameshoe will update as soon as possible. Stay tuned.