This holiday, there will be a new game allowing you to play as the Sith Stalker. From the trailers shown, Starkiler is not anywhere as wounded as Vader. He can still run, use force lightning, ect. I t won't be an add on, but an entirely new game. It won't be canonical, as this game follows the Sith ending. I look foward to it.

Where did you hear about this? I'd like to see this article, sounds interesting!

Here's the trailer:

Metal Gear Solid: Peace Walker | Castlevania: Lords of Shadow

its pretty much just an add on to the sith ending, it seems like the same game, same moves, same everything just a new story.. better be new moves and powers.