User blog comment:Subject 16*/Assassin's Creed: Revelations - News/@comment-65.8.153.76-20110519232645

I bet the artifact Altair hid was the sword of Eden, and at the end of the game Ezio gets it and also hides it for Desmond to use which would be Ubisoft's excuse to not switch from swords to guns in AC3 since Desmond would have a god-like sword.