The PC makers are invading! Welcome the Acer Iconia Android tablet fray:
http://www.youtube.com/watch?v=SrHrKSipZjk

Here's what I expect we should, uh, expect:
- Lower costs for entry-level tablets
- Higher quality entry-level tablets (should give Archos a run for its money)
- Quicker device iteration (multiple times per year)
- More hackable devices (less locked down)
- New innovations like pen input as well as other gimmicks
- Really bad screens (if it's anything like the laptop space)

The last benefit that I expect is more portable Android solutions. I honestly see the problem of waiting on hardware manufacturers to update the OS, disappear as they adapt to contend with this coming wave of light-speed iteration.