I have yet to play a Diablo game, but looking at these videos make it look great. It looks some what similar to WoW or FlyFF....Pretty decent looking though. The game comes out on pc only?
It's a Blizzard game so I guess it's only for the PC
Blizzard is not entirely PC limited.
Some blizzard games are later made for the consoles as well.
Warcraft II and Diablo were released for the Playstation and Starcraft and broodwar were released for the Nintendo 64.
Not to mention blizzard was going to make a game called Starcraft Ghost for only the consoles. I'm not sure what happened to it though

And Cris, I suggest playing through the original diablo and diablo II before playing diablo III. Not that you wont be able to, I just think It would be a more worthwhile game if you got in touch with its roots.