We've seen the Asus Padfone in various forms for a good while now: this appears to be the final form. Best yet, it's coming very soon — April, in fact.
So here's what we're getting in the phone: a 4.3-inch Super AMOLED qHD screen, a 1.5GHz dual-core Snapdragon S4 with Adreno 225 GPU, and an F2.2 "5-element" lens camera. Of course, the big draw here is what Asus is calling "1 SIM for 3 devices," meaning the phone docks into a tablet body (which looks, yes, quite like the Transformer Prime models) and that in turn plugs into a keyboard dock (again, it looks just like the Transformer Pad Prime's). The Padfone will be running Android 4 when it's released, but we aren't sure which version.
Completely unexpected, however, is the the addition of a stylus headset, which lets you use the tablet form as a virtual sketchpad (cue Flyer and Note enthusiasts) and also works as a headset for when you receive phone calls. (The ever-enthusiastic Asus CEO Jonney Shih wanted to reassure us that he is not crazy talking into a pen, there's actually a mic and speaker in it.)