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MacOS X has been touch capable for years. Apple just doesn't make OS X tablets (hardware). The feature is typically used with external drawing "tablets" like Wacom. But other folks have done what Apple won't: http://www.modbook.com/modbookpro
Tablets like this new Surface Pro, or like the Samsung Ativ Pro, which can run a complete OS, are going to be successful. A colleague bought an Ativ Pro last week, and the rest of the office wants one. Well, except me because I consider the MacBook Air a better machine, but, anyway I believe Apple will lose an opportunity if they don't release "touch OSX". I cannot do my work on iOS, I really need OSX for work, and it would be great to have it on a touch screen.
MacOS X has been touch capable for years. Apple just doesn't make OS X tablets (hardware). The feature is typically used with external drawing "tablets" like Wacom. But other folks have done what Apple won't: http://www.modbook.com/modbookpro