How many assassins creed is there going to be

It was declared that Ubisoft is planning on making a trilogy, therefore ending the main story with AC3. Not including the spinoffs and such (i.e. Assassin's Creed: Bloodlines, etc.)


http://ps3.ign.com/articles/105/1052557p1.html
http://www.videogamesblogger.com/2009/06/10/assassins-creed-3-will-see-desmond-become-the-ultimate-assassin.htm