Ubisoft's official Asssassin's Creed site reveals a launch date for Assassin's Creed 4: Black Flag by use of some technical wizardry that involves replacing a letter in the URL. As DarkZero discovered, heading to the official AC4 site for the world premiere trailer, which will launch in four days, and then simply adding a "v" to the end of the url pops up the image above with the launch date and reveal of the game coming to next-gen consoles.