In Assassin's Creed II, for the "I am Become Death, the Destroyer of Worlds" truth puzzle, turn the code wheel so the 9 matches with the solid triangle.
Match the 5 with a circle with two squares, the 2 with a circle, and the 9 with the sold triangle. Then on the next screen, press the red button.
Finally highlight the hidden group of numbers on the lower left corner of the paper and ID it.
Assassin's Creed III will be released on October 30, 2012 for PlayStation 3 and Xbox 360, and Assassin's Creed III: Liberation will be out the same day for PlayStation Vita.