We've got good news and bad news in equal measure for those pining after a Nexus 7 of their very own. If you're reluctant to spend that much hard-earned cash at the Google Play Store, Google's senior VP of mobile Andy Rubin has hinted to AllThingsD that the ASUS-made tablet could end up at retail stores before too long; the Play-only availability was just what Google had to mention at I/O. There could be some markup in other channels, given that Google is selling at what's very nearly wholesale prices. The bad news? Google won't be changing its attitude towards tablet-native apps anytime soon. Rubin sees Google Play content additions as key to driving Android tablet adoption, not the encouragement of tablet-specific app development -- he'd prefer the one-size-fits-all model. We'll see whether magazines and movie sales are enough to turn around so-so market share, but if you were hoping Rubin would address criticisms that Android tablet apps are just blown-up phone apps, you'll have to keep waiting.