ASUS PadFone Infinity: http://www.asus.com/Tablet_Mobile/PadFone_Infinity/

As with all incarnations of the PadFone thus far, US consumers are getting left out in the cold, but this would certainly be a boon for those in Europe and Asia. Of course, one would have to play the 'wait and see' game with regard to Ubuntu's portability to such a device.