Well, it has been a trend for the game publishers to delay it for PC gamers, and Ubisoft has been on the top of this list. If you go through the history, all the Ubisoft's stealth action series went on delay when it came to release them for PC.
Ubisoft has delayed the game for PC platform to November 20, 2012. There have been four Assassin's Creed games on consoles so far, and every single one has been slow to make it to computers.
An interesting conversation between GameSpy and Ubisoft PR has been posted on kotaku lately, which throws us an interesting piece of humor:
GameSpy: So when's the PC release date?
Ubisoft PR: October 30th.
GameSpy: Yeah, but when's the real PC release date?
Ubisoft PR: It's October 30th.
GameSpy: Uh huh. And can you say that with a straight face?
Ubisoft PR: You can ask me as many times as you like, but the answer will be the same.
GameSpy: Very well, let's move on. So, when will you announce the delay of the PC version?
Ubisoft PR: ...
So what do you think? You going to buy the game when it is delayed for your platform? or you would show them who is running the company?