Nokia have already announced two Windows smartphones at Nokia World and another has been leaked online.

The Nokia Lumia 900 specification has appeared online thanks to a leak discovered by TheNokiaBlog. Presumably, the Nokia Lumia 900 is at the top of Nokia's smartphone range above the recently announced Nokia Lumia 800 and 710.

The leak shows that the Lumia 900 will have a 4.3 inch AMOLED display and will be powered by a 1.4 GHz processor. The RAM comes in at a whopping 1GB, while onboard memory weighs in at an impressive 32GB.

Additional features include NFC support for contact-less payments using your mobile and Bluetooth 4.0 support.

We at 3G expect the Nokia Lumia 900 to be announced tomorrow at Nokia World, but we'll just have to wait and see.