I would love to see something innovative from Apple in the tablet market as I believe people secretly want the touch screen functionality but it just hasn't been implemented correctly as of yet. I'd love to see something such as a 12" MacBook Pro with a fully detachable screen. It could communicate with the other half via some kind of High Speed Wireless technology (WUSB for example).
I have seen the swivel screen tablet/notebook hybrids at work but they are far too chunky, ugly and impractical. I think a detachable (LED?) screen is a slightly more natural progression from the existing computer setups we have used for so long. It would be extremely lightweight and far more effective as something you can hold in your hands.
You could use the MacBook for word processing and then simply whip off the screen, place the base back in to the laptop bag and do a bit of drawing/design work directly on the screen. Especially with that Multi-Point technology listed in Apples patent filings.
You could go further by integrating a Flash Drive into the screen for buffering/temporary storage that could sync with the base wirelessly or when you reconnect the screen and the base together.
There are a few fresh angles to approach the tablet computer and Apple could turn the currently niche market into something very exciting. It doesn't mean it's going to happen though unfortunately.