User blog comment:D. Cello/Brotherhood's Multiplayer Beta Exclusive to PS3/@comment-1655340-20100718204934

Well then it still stinks then. If they are going to port, then they should bring everything over. So if there is extra content on the PS3 (that is not DLC), then they shouold put it on the 360 and PC as well when they make the port for the release.

And, to the best of my knowledge, they are making another PSP title with Ezio, but I may be wrong.