A new batch of Achievements referring to additional Animus-based puzzle sections have been posted by Xbox 360 Achievements.
The DLC is yet to be given a name, release date or price, but the ten additional Achievements are worth 250 points.
A brand new retail release, titled Assassin's Creed: Revelations - Ottoman Edition, has also been discovered.
Briefly posted on the GAME website, the front cover of the Ottoman Edition boasts free downloadable content.
Fellow retailer AMX, meanwhile, lists the game for release on March 16, reports CVG.
Assassin's Creed: Revelations was released last November. The game has been supported with a number of multiplayer DLC packs since its launch.
> Read our review of Assassin's Creed: Revelations
Watch a trailer for Assassin's Creed: Revelations below: