User blog comment:Slate Vesper/Assassinews 15-06-'13 — Three Assassin's Creeds in development and Patrice Désilets' lawsuit with Ubisoft/@comment-71.172.17.110-20130621212538/@comment-1888015-20130621213008

If you're refering to the extra 60 minutes of gameplay content, no. That's the result of an exclusive deal between Ubisoft and Sony.

It came about because Assassin's Creed was meant to be a Sony exclusive game, but they migrated to the Xbox 360 as well, so Sony gets these additional bits of content as a compromise.