Here is a decent take on where things are headed... http://www.pcmag.com/article2/0,2817,2381389,00.asp
All this will available on pretty much be on any tablet, and I'm not seeing the clear edge Apple got from four years of head-start development work. Most reviewers think the Xoom is a better device, except for the price. But the clear winner will be some cheap Android down the road and not anything that's available today
Dvorak has been writing about tech for as long as I can remember and has a great grasp on the directions things will likely go...