In an interview with Eurogamer Blizzards Rob Pardo admit that it's a "theoretical possibility" that Diablo III will be ported to consoles. Earlier Blizzard has gone out with the information that the game will only be released to the PC and Mac. A decision the company motivate with that it’s the most suitable platforms for the game. But when Pardo got the question if there was a possibility that the game could get ported to consoles from Eurogamer, he answered:
I think it's theoretically possible. It would have some control changes that I think you'd have to make... But it's probably, of our major franchises, the one that's most console friendly, for sure.
On the question of a console version and if it would mean that they have to build it from scratch, Pardo answered:
Oh, I don't think it would be a redesigned game. Out of StarCraft, Warcraft or WOW, Diablo would be the easiest game to translate. But it would still take a bit of work.
Now we know the possibility exist. But due to what Blizzard earlier said regarding a consoleversion, it’s most likely highly unlikely.