It seems to be gone now, but did anyone else catch the the link to sign up for an account at the bottom of the main google search page today? Either they're just about ready to finally launch for real or, since it's gone now, they were just trying to get more testers since they've probably exhausted invites as a way of doing this.
I just bought that one for my son a couple weeks ago (it was on sale for $579 at Staples, plus a $100 Visa Card since he is a student). He is thrilled with it so far. I have had pretty good luck with Dells.