Nokia has definitely been making use of its partnership with Microsoft lately, releasing its first two Windows Phone 7 phones, the Nokia Lumia 710 and Lumia 800. Then again, the argument could be made that Nokia isn't pushing out enough WP7 devices, being Microsoft's best friend and all.
Thankfully, it seems that Nokia has taken a hint . . . just not officially. What you see above is, most likely, the Nokia 900. It's actually a screenshot from a video that detailed this phone, but it was subsequently set as a private video for obvious reasons.
Since this is very similar in design to the Lumia 800, and since it has a higher number, you can expect the Lumia 900 to carry a bigger screen and possibly a better camera system. The internals won't differ much from the exisiting Nokia Windows Phones, though, since Microsoft has the internal hardware specifications locked down really tightly.
Just like the other Nokia WP7 hardware, the Lumia 900 looks absolutely stunning. I hope that this (and Nokia's other phones) will hit US shores sometime soon.[My Nokia Blog]