One of this years Emerging Technology on display at SIGGRAPH, is a user interface that expands on the mouse and tablet concept. With this technology, there are different types controls that you use to manipulate the various objects on your screen. These control objects are sensed by the "tablet", they are neither electronic or wired to the tablet. I'm not quite sure how this will fit into the pipeline, but I was fascinated by the technology.
Another display was on a wireless interface communication and power system. If you think back to how many times you've cursed the computer industry as you where crawling behind your desk, tracing through the maze of wires between your computer and the peripherals. This system eliminates the need for communication wires between peripherals and you no longer have to plug in each device into a power strip.