This also got me thinking that since IA currently has Luke as "A New Hope" version, does anyone think FFG is going to come out with a Jedi ally version of him after Hoth? He's really the only hero I can think of that truly changed skills wise in the films and would warrant a second version...
I don't have the exact quote in front of me, but the RRG actually hints at this. When describing the rules surrounding unique characters it says that you can only have one of each based on character name and it specifically references the text in parenthesis. Something along the lines of "if you have Luke Skywalker (Hero of the Rebellion) you can't have any other Luke Skywalker." Based on that I'd say it's more than likely.