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No. MacOSX is not made for touchscreen use. Apple wouldn't be stupid and just replace the cursor with your finger. It doesn't work well.
 
If the iPad is successful as an interface in its current relatively limited role, I could envision Apple moving the ball down the field and bringing out an actual tablet running OSX with a touch interface at some point in the future.

Yes, there are already such Windows devices out there for that, but touch interface has been a major thrust for Apple over these last few years, and I have the impression that someday they'll have it functional enough to make it work far better as an actual computer than the largely failed niche devices from Fujitsu etc.
 
The current lineup of Apple MBPs are pretty solid (physically) and having a rotational touch display (ala HP and some other notebook makers of touch screen display) will ruin it and unless Apple found another solution then a rotational display, I don't think so.

Also, I don't see the point of having to lift up your hand just to touch the display when you can do perfectly fine (not to mention faster) with the keyboard and mouse :rolleyes:

The iPad fits just that and although it's not a full fledge OS, people need to remember that this is a new market and introducing too many new stuffs could end up hurting the notebook sales instead which I am pretty sure many companies do not want.

Oh and regarding the OS + Touch thingy, someone mentioned over MR before that OSX wasn't design for touch interface so I don't think we will ever see and OSX with touch interface unless they do some kind of additional layer stuffs like Apple Front Row.
 
I believe that any new touchscreen products from Apple will come up from the iPhone/iPad line, rather than from the desktop Mac OS side.
 
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