Originally Posted by Clippersfan86
I beat first one and half of second one. Aren't there 4 now? Or only 3?
The one coming out in November will be the fourth one. Storyline wise, Brotherhood is a continuation of the second one, it literally picks up at the exact spot AC2 left off, and Revelations will be a continuation of Brotherhood, except Ezio is like 50 years old (hmm.. very MGS-esque) and it will also be the last one with the Altair/Ezio storyline. It will tie up all the loose ends in the storyline and apparently pave the way for AC3. Gameplay wise, Brotherhood is a big improvement on the second one, and Revelations is supposed to be much different.
If you care about the story, try to finish #2, or at least read up on it, or I can give you a short what's what based on where you were.