The rented movies will available across the devices. You can watch the rented movies on the web or your Android device. Xoom users will be the first to get the service via the Android 3.1 update, which started rolling out tonight. Google will soon push an update for Android devices running on Android 2.2 or above to use the service as well.
This service also looks like US only right now, but will be available in other countries later.
