User blog comment:D. Cello/Assassinews 10/19 -- ACR new info/@comment-78.147.132.98-20111025162512/@comment-1891670-20111025162624

http://assassinscreed.wikia.com/wiki/Assassin%27s_Creed:_Revelations_Achievements <-- those are the achievements. As for the games, nothing has been announced after ACIII, but it can still come ;)