Star Wars: The Force Unleashed III is the non released and last game in the series. Sam Witwer and Haden Blackman spoke about it in a February 2013 interview, saying that it would be an interesting project for next years generation consoles (PS4, Xbox One, Wii U). Walt Disney and LucasArts.
In a November 2015 interview with Cinelinx, former LucasArts creative director, Haden Blackman, revealed the game would have been more open-world and see Starkiller and Vader team-up to fight a new threat from the Emperor. The Force did's be Darth Vader was land in for Starkiller Soon