Straddling the line between PDA and UMPC — and ending up looking something like an Atari Lynx — the just-announced Willcom D4, co-created with Sharp, is an Intel Atom-powered computer capable of running Windows Vista. It has a five-inch touchscreen (roughly the size of a whole iPhone or iPod Touch, to give you some idea) and includes to my delight a slide-out QWERTY keyboard. A keyboard that will likely be unusable for long form text input, of course, but one that is essential all the same.

Sharp/Willcom D4 UMPC runns Vista: [Via BoingBoing]