Re: Not just for touch.
I think there is no future for touch on the traditional desktop setup. That said, I do like touch on mobile devices. Touch works there and is a necessity to keep device sizes small. Mobile devices being mainly used for consuming content do not need keyboards. That changes once even light editing is a more common need, the soft keyboards on the screens are not only horrible to type on, they also use up too much screen space which on mobile devices is the biggest premium.
The traditional desktop has a monitor that is mounted upright on top of the desk (thus desktop). Using touch on this traditional setup means reachoing out to a monitor. While that may be fun and functional for the casual action, it is very fatiguing. Besides that, no desktop touch implementation is complete as there is still a need to use mouse and keyboard. If touch on the desktop is to make sense, then it needs to replace mouse and keyboard entirely. Even then, there are drawbacks. The mouse is a much better pointing device than a finger. The small mouse pointer also does not obstruct the screen as the big hand does. With the higher resolution and better accuracy there is also no need for big hunky tiles and buttons that provide plenyt of landing space for fingers.
Let's assume there will be an OS that overcomes all these things, we still have a lot of work to do here. In order to make touch on desktops ergonomical we need to take out the saws, cut holes into our office furniture, and mount the touch monitors into the desktop surfaces at the correct angle. Since touch UIs need to have much larger controls we desperately need at least two monitors just to be able to display what we currently can display. Ideally, a third, specially crafted multi-purpose monitor needs to be mounted that is mainly used as text entry device. If it is to mimic a keyboard (after all, we developed tremendous skills in using keyboards) the special monitor needs to provide tactile feedback. That technology already exists.
OK, so we need to buy more expensive monitors, have to replace all applications so that they all have a touch enabled UI, we have to cut our office furniture into pieces or buy new, and we need an OS that properly supports all that. So in order to make touch usable on the desktop everyone has to spend hundreds if not thousands of dollars to just get back to the current productivity levels that can be accomplished with a traditional keyboard and mouse and a cheap upright monitor...and all that to accomplish the exact same stuff as we do now!!
Yea, sure, touch on desktops is a real winner!