Treyarch has always given more to the PC crowd than Infinity Ward. PC gamers can rest assured that Black Ops 2 will have dedicated servers, many customisable settings and DX11 features. Besides that, the game does actually look like a lot of fun. Treyarch is even innovating within the singleplayer campaign with things like multiple endings and sandbox-esque missions. Zombies mode is also having its largest ever presence in a Call of Duty game. With the mode now running from the multiplayer executable, Treyarch has gained the ability to implement multiple zombies game-modes, up to 8 players and double the zombies in the same game, and a more structured storyline.
All in all, Black Ops 2 looks like a huge improvement over all Call of Duty games before it, and that's without even mentioning the inevitably addictive and fun multiplayer modes. There is still room for improvement, however – the graphics are still average if not below it, and the requirements are a bit high for what it looks like. Hopefully the game won't be released as poorly optimised as Black Ops 1 was.