Bill Gates has gone public on Microsoft's commercializing a multi-touch table interface called "Surface". This has been shown before, but only as one of the (many) prototypes that you see these brief glimpses of and which often are not commercialized (I think "Surface" and the device-pairing stuff was shown at some demo relating to digital identity).
I doubt that the first few generations of Surface will be what I want, but I bet in about a decade professionals will be able to work at a desk with a blotter-sized 133-DPI display (as well as vertically-oriented screens). Sweet.