We will be having prizes for all three events, just don't know exactly which set and how much will be provided yet. stsparks has been working with Moses who has graciously worked out some prize support for us. There is more info on the Wizards forums (under General). I know I will have some Attack on Endor sets / stuff for my scenario. There are some maps, monthly promos and other goodies we've been collecting for a few months to distribute there. I have some 'secret' objectives planned for some of the prizes in my scenario, not just for the winner. Stuff like first to roll a critical attack, etc.
I, personally, doubt we will actually have Jedi Academy stuff since it releases officially the following week, but would like to hope.
There is always a chance there might be the set on display if nothing else.