A leaked image appears to point to a new Prince of Persia game in the works.
The screenshot, labled ‘POP_ZERO_2,’ was posted by a user on the Ubisoft forums in response to those questioning the current dormancy of the long-running franchise.
Prince of Persia Zero was the codename for a canned project a few years ago, where Ubisoft was attempting a radical change in the series (potentially a present day setting).
If the image is real, it looks to be an early build of the game. Ubisoft is mum at the moment, so consider this utterly unconfirmed for now.