More Info Dell announces XPS 10 Windows 8 hybrid, XPS Duo 12 convertible Dell XPS 12 Windows 8 convertible priced at $1,199 and up, ships this month with pre-orders starting today Toshiba unveils U925t Ultrabook with slide-out touchscreen A Windows 8 PC that can be used in a tablet mode? Those will come a dime a dozen this fall. But what's fascinating is how each PC maker has approached the challenge of mixing a touchscreen with a more traditional mouse-and-keyboard setup. For some OEMs, this means going the hybrid route, with 10- or 11-inch tablets that slot neatly into an optional keyboard dock. For others, it means a full-fledged PC with a slide-out touchscreen. And for a few, it means a laptop whose screen can fold down, leaving you with what can only be described as an oversized slate. That's how we would describe the Dell XPS 12, a 12.5-inch notebook whose screen flips inside its hinge, allowing you to use the machine in tablet mode or, if you prefer, with the screen facing away from the keys. (Yes, Dell is giving this form factor a second try.) It starts at a relatively steep $1,200 but then again, this is a fairly premium machine we're talking about: it combines all the ingredients of an Ultrabook (lightweight build, Ivy Bridge processor and a solid-state drive) with a 400-nit, 1080p, Gorilla Glass touchscreen. So what's it like to use this form factor? And how does it fare as a regular ol' Windows 8 PC? Let's see.