As we move closer to the release of The Force Unleashed II in its video game form (the book and comic are already out!), the question of whether the series will become a trilogy is still trying to be solidified.
Earlier reports indicated that a third installment would not come to fruition, having been canned by LucasArts only a few months before the second hits. Now, however, speaking with SciFiNow Magazine, Project Lead Julio Torres stated that a third story is still being “worked out” at this time. We shall be watching this story grow with much interesting and will let you know if any more information is released regarding it.
Source: VG247



All I will say about this is I hope TFU does not become another KOTOR don’t do it Lucas Arts don’t end another Star Wars video game series on a cliff hanger don’t start what you can’t or wont finish again don’t do it