As the comments point out, the tablet has a windows logo at the bottom... so it runs ubuntu (like any rooted tablet, I guess), but it probably isn't an "ubuntu tablet" per se...
Please don't link to that blog again. It takes up 30% of a typical CPU just to show a single, static web page. Even when the page is in a hidden tab. Thank you. (OS X 10.5, Safari 5.0.3)
May I humbly suggest you use either a better OS or browser or some combination of said components. It takes 0% CPU on my netbook running XP and Chrome latest version.
But that blog wrote a sentence about another blog post!
I spotted the Windows logo on what looks like a button too. With the announced specs, I wonder how long it will take on such a device before emptying the battery.