Here, I found this footage on youtube. Srry about the bad quality. They actually already announced SWB2 which will come out Nov. 2010.
Here are the maps that have been revealed just by watching this vid (apparently, space and land battles will be all one map!)
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Tatooine
Rhen Var
Yavin
Corascaunt
Bespin
Geanosis
Kayshyyk
Death Star
Dantooine