Assassin's Creed: Embers

Assassin's Creed: Embers is an animated short film project made to expand the Assassin's Creed series. It was revealed by Ubisoft on 6 June 2011, and is set for release on 15 November 2011 with the release of Assassin's Creed: Revelations Animus, Collector, and Signature Editions.
UbiWorkShop released a teaser trailer on 21 July 2011, which was featured at Comic-Con 2011.
At the Comic-Con 2011 Assassin's Creed: Revelations Panel on 23 July 2011, the panel explained that the Embers trailer shows an older Ezio (post-Revelations) with his family. He fears not only that he is running out of time, but that someone is trying to hunt him down. Embers is described as a narrative in the game that you cannot play. The panel recommended watching Embers after completing Revelations, so that the events that unfold are experienced in sequence.
The transcript of the Comic-Con 2011 Assassin's Creed: Revelations Panel is available here.
During the Comic-Con 2011 Panel: Assassin's Creed: 'Creation of a Universe', the full trailer for Embers was revealed.