The iPad 2 Finally

New dual-core 'A5' chipset giving 2x CPU speed and 9x GPU speed
Gyroscope
33% thinner
Lighter
Same 10 hour battery life
2 video cameras
HDMI out (via dock connector adapter)
New 'smart cover' case that can be used like the current one, but no added bulk (magnetic)
And iOS 4.3 (separate post)