When will Sony alpha's get a rear LCD touchscreen like the Canon t4i or Panasonic G5?

IMHO, that has a place on a camera with no viewfinder.   Meaning you're looking at the LCD and supposed to touch it.   If the camera has a good viewfinder and you're supposed to use the viewfinder you 'should'n't' really need a touch screen.

My nose would be making adjustments to the touchscreen before my eye got to the viewfinder.

IMHO.