Images are slowly showing up here at SSG and elsewhere. I was most excited about the funeral pyre Vader, but then I saw the tag that said it's a concept and they needed to get feedback on it. It looks great and I hope the release it!
As for other stuff, Luminara and those individual clones in the packs are cool. In the Legacy Collection, new Cody, Leesub Sirln, and the black and white Bespin Guards are all pretty great surprises.