Nokia Catwalk, rumored to be Lumia 920's successor

Nokia Lumia 920 is a smartphone developed by Nokia that runs the Windows Phone 8 operating system. It was announced on September 5, 2012, and was first released on November 2, 2012.
In an attempt to make its next flagship lighter and thinner, Nokia is already planning to replace it with another flagship model, codenamed Catwalk.

According to the people familiar with Nokia's plans, the Catwalk is going to feature similar hardware specifications as the Lumia 920.

It is claimed that by adopting an aluminium shell the new device will compete with the iPhone 5 for looks and, equally importantly, weight.

In addition, there are two more Lumia smartphones that will join the lineup this year, but no further information has been provided.