Hmm no idea if it's relevant but I was reading this comment
from mynokiablog.com:

"DGui says:
July 8, 2011 at 3:31 pm

Just updated my blog. Found a Nokia engineer talking about the ‘aha moment’, he works at the Research branch of the Silicon Valley Nokia, near SanFran that was mentioned by TabCo as a place where a milestone happened. Etc… As mentioned above the domain was registered near Redmond, Windows 8 running tablet?…"

then I went to DGui's blog and I read:

Dr Quinn Jacobson, speaks of the ‘Aha Moment’ several times, I’m guessing we’re heading more there. He has worked at Intel and Sun Microsystems and is a leader in processor architecture. Read his post below:
“ Posted by Quinn Jacobson, June 19, 2010
I am a junky for that “aha” moment of finding an solution to a technical puzzle."

The Nokia engineer name DGui is talking about is Quinn Jacobson

...and from the whoistabco web site:

"Ian Quincy (aka IQ) is the founder and CEO of TabCo..."

Quinn Jacobson - Ian Quincy... hmm

[edit]

"Full details on specific country availability will be made available in the coming weeks."

It can't be a Windows 8 tablet then, I'm still hoping it's MeeGo