Ubisoft has announced that it will be releasing a remake of Prince of Persia: The Two Thrones for the PSP. 
This will not be a direct port to Sony’s console but actually a complete remake as Ubisoft is planning to make changes to existing levels and adding at least one new level.
The PSP version will also include a multiplayer component though there are no details on how this will work.
Because of all these changes, the PSP version will be renamed to Prince of Persia: Rival Swords.
The title is expected to release by the end of 2006.