Andy Lees mentioned at AsiaD that Nokia would be launching more than one Windows Phone at its London-based event next week, and there's a chance that the prototype you see above could be unveiled alongside the Nokia 800 Sea Ray. Pocketnow is referring to the Mr. Blurrycam-produced image as the Sabre, said to be running on a 1.4GHz single-core CPU, 1GB of RAM, a 3.5-inch WVGA display and a 5MP rear camera. The alleged price won't stab your wallet, as the source claims it'll cost somewhere between $410 and $480. Of course, there's less than a week before Nokia World begins and the speculation ends, and we'll be there to deliver the blow-by-blow action as it happens.
Update: Commenters have made the connection between this mysterious device and the recently-announced Nokia 603, a Symbian Belle handset, with the hardware buttons simply whited out at the bottom. And we're definitely seeing the resemblance -- in fact, if you look closely enough at the Metro UI it appears slightly crooked, as if the stack of tiles is leaning to the right. We'd say the chances of this image being a fake are quite high.