I can see uses for it. In fact I have long been saying that touchscreens were sidelined by the awkwardness of reaching up to the monitor, this screen goes some way to negating that problem.
However, while it would be fabulous for Cubase and suchlike (always wanted TS Cubase), as a default PC interface to replace the mouse and keyboard? No Thanks.
If you can set it on your kneed it gets a little more useful, but how do 6 people watch the Formula One on that, as they do with my current machine?
I hear they're saying it will be ONLY this interface too.....finally MS commit suicide

"I'd like windows 7 please"
"certainly sir, that'll be £399 for the disc, and £1499 for the 22" touchscreen"
Must be Balmer's idea surely, Gates is a git, not a dribbling retard.