Nokia’s latest handset, the Lumia 900, has finally been announced.

The AT&T exclusive (for now) takes the successful Nokia Lumia 800 and supersizes it to a 4.3” Super AMOLED display, adding LTE support in the process. There’s also a new front-facing camera, a detail that was the first evidence of a new handset in the Nokia Lumia range.

The rest of the device’s specs are the same as the Lumia 800 – a 1.4 GHz single-core CPU, 512 MB of RAM and 16 GB of internal storage. On the rear-camera, there’s the same 8 megapixel Carl Zeiss f/2.2 camera that has proved popular thus far.

This is the first Windows Phone that supports LTE and will be backed by a massive advertising campaign in the US, so expect the Lumia 900 to sell well.

It’s unfortunate that Microsoft continue to provide such strict requirements on Windows Phone hardware though – Android phones with dual core CPUs are commonplace now, and quad-core isn’t too far off either.

Screen resolution is also an area in which Windows Phones lag behind, offering only the 480 x 800 pixel resolution of yesteryear, a resolution originally introduced to smartphones in 2008. Android attained resolution independence in version 1.6 – how long will it take Windows Phone to get there? In his interview with The Verge, Nokia CEO Stephen Elop said that new phones would come out quickly; hopefully this an indication that these standards will evolve rapidly as well.

If you’re looking to get a Windows Phone in the near future, it looks like the Lumia 900 and the HTC Titan II will be at the top of the pile. Both offer good build quality, excellent cameras (although the Titan II has a 16 megapixel to the 900’s 8 megapixel) and a large if not high-res screen. The Lumia 900 will be available exclusively on AT&T in the next two months, for an unspecified price.

This article was written by William Judd. William writes for Mobile Fun, the UK’s leading online retailer of Nokia Lumia 800 chargers and Nokia Lumia 800 car holders.