Ubisoft said that the PC version will be released at a later date, which is nothing new.
Ubisoft game director Ashraf Ismail has announced that
Assassin’s Creed 4: Black Flag will not launch on PC alongside the console
versions. The PC version will launch “a few weeks after” the PS3, Wii U and Xbox 360.
“We’re working hard on the PC version. It’s one of the
main platforms we work on in the office. For our PC fans, don’t worry.
The game on PC looks phenomenal”, Ismail said.