It's a shame they built a massive, 11-pound x86 desktop PC in a bloated tablet format rather than taking the opportunity to build an ARM-based tablet for WinRT with an unusually large screen. There are probably still quite few issues that need to be solved to make LCDs light enough for a truly mobile tablet at that scale, but Sony is in a good position to at least experiment in that space.
I guessing they would like to run some apps that aren't arm compatible, most desktop apps aren't yet. With the usual price tag sony puts on their computers, I'm guessing that they will market it as a touch screen desktop. Like the HP media center pcs.
