I repeat this “concept” is not shipping in the near future. It’s just a concept ala the “Courier concept” prior to iPad.
It's not a proof of concept, genius. It's a live demo of what they'll be releasing 4-5 months from now. The courier on the other hand was never anything more than a concept. It was never demoed. No one ever played with a prototype. They didn't even bring it up in a keynote speech, as far as I know. It was quietly announced as something a small team within MS was banging out behind the scenes, and quietly killed when Bill Gates learned it wasn't capable of reading email or installing apps.