It looks like the new generation Xoom will come in two sizes, both using Android 3.2, It is slimmer than the Iphone 4 and measure about 9mm. Both will be codenamed 'Flemming.'
The largest is 10.1-inch model like the original Xoom, while the smaller version will be an 8.2-inch device. The power button is on the rear along with a volume rocker and of course rear facing cameras.
According to Engadget, which got its paws on the beasts the prototypes are buggy and suffer frequent reboots. It might be a while before they are in the shops.