DELL XPS 12 DUO.....

The Duo 12 is a hugely impressive two-in-one device that banishes the weight problem that held the Inspiron Duo back – as well as the not inconsiderable increase in oomph; The XPS Duo 12 features Core i5 or -i7 processors instead of the Atom in the old Windows 7-powered Duo.

It's exactly the kind of device that Windows 8 was built for; great for touch, but it can get out of the way when you need to get some actual work done on the desktop.

Here's the screen fully rotated. Ignore the gaps you can see around the bezel - it's because this is a pre-production unit. The copy of Windows 8 on the unit was also in "test mode" - something we haven't seen before - but presumably it's nowhere near the final version that Dell will ship with the device.

The screen has a Windows button for returning to the Start screen when you're in tablet mode.

"Some of our competitiors think about mobile design and think it's impossible to do a good or great convertible design," said Dell's Sam Burd during this morning's IFA 2012 Dell press conference. "The [XPS Duo 12] combines the power of working with a PC with the ability to consume content in other ways. The two devices in a pretty awesome combination."