Ricky over at Symbian Guru has published a few high quality comparison pictures between the Nokia N900 and the Nokia N810 internet tablet. You can find the high quality photos here
With Ovi Maps, you can easily find your current location, places nearby, and addresses you are looking for, and save all your favourite places. Get to your destination safe and sound with Drive and Walk, real-time car and pedestrian navigation. If you preload the map data on your compatible Nokia device with Map Loader, you can also use all these features and services offline.
Windows Phone 7 Devices including the Nokia Lumia 900, Nokia Lumia 800, Nokia Lumia 710, HTC 7 Surround, Samsung Focus, LG Optimus 7,LG Optimus Quantum, HTC TITAN, HTC TITAN II, HTC Arrive, HTC Radar, HTC Trophy, HTC 7 Pro.