Mavimao said:
2.1 fits perfectly. It's tells a person downloading it that it is Harmy's second version revised - and even if in reality it is somewhat heavily modified from 2.0. This helps keep it in line with his 2nd take on ESB and ROTJ.
I would guess that 3.0 would be a 1080p version - perhaps a hybrid of the bluray and the Saving Star Wars project?
I agree that 2.1 is the least confusing.