I wasn't too excited, but this trailer has got me excited. My wife and son both think it looks like crap, sadly, but this trailer completely won me over.
It manages to look like a new film and somehow convey the sense that it's a 1970s movie about outer space, coming out just before A New Hope. I'm not sure exactly how to define that, but the overall aesthetic just makes it feel like it really fits.
Also, great to see Mon Mothma again! I think that's the same actress who played her in the deleted scenes from Revenge of the Sith.