I pre-ordered as I am a very happy OpenPandora owner. It's a full Linux (especially now that I have Debian on it) and I can VNC or SSH with tablets and phones to it. When closed it consumes very little battery, it has tons of games and I can do full dev on it. The only annoying thing for me is an ARM thing; GHCi still doesn't seem to work on ARM, but that's a minor annoyance and last I check it is close to getting there.

Edit: to be honest; the Pyra is almost perfect for me (when using it with a $30 Android tablet as monitor it is very close). Currently my perfect all day computer would be a 10 inch tablet running (native) Linux with a stand, 3g and 15+ hrs battery life. I really like the MS foldable mobile keyboard but the only Linux ready stuff are full laptops or chromebooks. The chromebooks have no 3g unfortunately.

Mandatory warning: PowerVR.