The OS looks ready to go though. All of the theme options are running, the Start screen has new background options, and the music and video marketplaces are all looking good. The video even walks through a bit of the desktop environment, and obviously some of the new perks like the Charm menu and new sharing options.
The only thing is that the tablet it is being run on does look pretty bulky and heavy, which seems to be a trend with Windows 8 tablets. Even one of the lightest reported Windows 8 tablets (the Samsung Series 7 slate) is still half a pound heavier than the Asus Transformer Infinity, and about .4 pounds heavier than the new iPad.