There are a few pre-CES shipping devices with 12" capacitive multi-touch screens. The HP TouchSmart TX2 for example. These are more traditional tablet/notebook PCs, but with Win7 they do allow for "iPhone-like" gestures. The TouchSmart in particular is a mix between awesome and frustrating -- the screen is great and the multi-touch is fabulous, but it's too heavy, its battery life is awful, and mine just died for no apparent reason.
