Assassin's Creed: Revelations was supposed to be the first time in the series that a game released for all platforms on the same day. Well, it won't. Ubisoft confirmed to Kotaku that the PC version of Assassin's Creed: Revelations has been delayed until December. No specific December date was given, nor a reason, but we're betting it's not to remove all the DRM from it.
The PS3 and Xbox 360 versions of the game will still release November 15.