OCModShop posted an interview with Ubisoft's Patrice Desilets

On August 26th, 2007 an 11 minute demo of Assassin's Creed was shown at the PAX 2007 by Ubisoft Montral's Creative Director, Patrice Desilets. Too bad Jade Raymond, the producer of Assassin's Creed, wasn't there... there would have been a page dedicated just to her! The level that was shown was the same as in the E3 demo, however a different path was taken to reach the target. At the end of the demo, a conversation between Altair and the head of the Assassin's bureau in Jerusalem, Malik, showed an intense rivalry between the two.

Assassin's Creed Q&A With Ubisoft's Patrice Desilets