The extra levels in Angry Birds Star Wars titled Path of the Jedi can be unlocked by either buying a $2 IAP or 3-starring every level. Being a gamer at heart, I feel the latter one is the only way to go.
However, the fact that new levels are periodically added in free updates makes the concept of "every level" a bit vague. Does this also mean the bonus levels? How about the ones that aren't unlocked yet?
I believe the game was released before the Hoth levels; will they also be needed? I currently have Tatooine and Death Star 3-starred so at least completing Hoth or the Bonus levels is needed but do I need both?
Furthermore, should I avoid future updates if I want to unlock the levels faster?