Touch pads will be a thing of the past. In the same way that we view big unwieldy CRT screens as a relic of the 90s, we will probably view touchscreens in the same way. There is a great video courtesy of TED about how we will interact with products in the future.
It seems that more and more of the information available through the web and through mobile devices will become real. Information will no longer be something restricted to reading or viewing. Their will be touch screen gloves, and information will be projected into 3D.