If at some point an input method that is faster and more efficient than QWERTY gains real traction and is taught or exposed to our youth, I'd expect a shift away from what's become convention.

This is by no means something that will just happen overnight, but I'd be a little saddened if in the last years of my life, QWERTY remains as the dominant method of text input. It's certainly a good solution, but no where near an optimal one.