Just bought one of these (yes, more expense for my pains) and after spending an entire day trying to root it (did it finally) I see it's got ice cream sandwich at the core of it, which is good, cos I got a 4.x platform to find a bunch of new problems on now which I can finally debug and see if it's my code or more agk problems
Anyway, I was curious if anyone published to the amazon store yet specifically. It seems that this is a niche market where most users won't have access to the google marketplace and hence, fun and games. I had to download shedloads of SDK stuff just to get root and thought I'd bricked it several times.. nice bit of kit once you get the amazon crippleware off it.