I had to kill a feature today. I had added code (I don't remember if it was 3.2, or 3.4) to allow for you to hold the <CTRL> key and use the ScrollWheel in order to switch to and from 3D view.
Microsoft decided that if using a touch screen, pinching would do a CTRL-ScrollWheel, so touch became less useful.
If anyone actually want's that feature, I can maybe add it in as Shift-ScrollWheel instead or something else.
Ralph