One "force" away from touch is Google Glass. I'm not quite sure what the dominant UI for devices like that is going to be, but it certainly won't be touching the display!
Moreover, I imagine (okay, hope) that intense miniaturization is going to one day produce something like "Google Contact Lenses", which are going to be even more restrictive in the sort of interactions they permit.
And anything that gets popular for Google Glass is probably also going to be good for existing contexts like cars.
I don't know exactly what this is going to be, but it'll be cool.