Jordan Mechner’s filed a trademark registration for Prince of Persia The Forgotten Sands for gaming-related use.

The movie tie-in game?

Edit: Mechner also filed the trademark registration for is “Prince of Persia Prodigy" (now dead), which a Google search shows as being associated with last year’s reboot of the reboot of the franchise. Given that association, it wouldn’t be a stretch to assume that it is the working title for the obviously-in-development sequel to a game that moved more than a million copies in a month.