Based on what Microsoft has shown so far, the Windows 8 tablet interface (or "tailored UI" in Microsoftese) will look and work a lot like Windows Phone 7.
Source: Yahoo! News
Microsoft’s Windows 8 was just revealed recently with a demo of the tablet-friendly interface at the D9 conference and then some actual hardware prototypes shown at Computex 2011. Future Windows desktops, notebooks, and tablets will all be running Windows 8 and the release date is now hinted for...
It's kind of hard to compare Mac OS X Lion to Windows 8, mainly because, well, while we now know a fair amount about Lion, we essentially know only two things about Windows 8: that it exists and that it has a tablet-friendly overlay as its main interface.
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Microsoft Demos Windows 8, New Interface
By Thom Holwerda on 2011-06-02 00:39:27
It's 2am here (edit: I'm done writing, it's 2:38am now), and I really ought to be sleeping right about now, but for some stupid arbitrary reason, the D9 conference is held at honestly irresponsible hours for...
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Microsoft's Steven Sinofsky at his D9 speech showed the tablet-native interface of Windows 8 for the first time. Borrowing heavily from the tile-based interface of Windows Phone 7, it can show a user's apps as well as live widget-like tiles, contacts and other data. Everything is intended to be...