The new user interface of Windows Phone 7.8 will be inspired by that of Windows Phone 8. Photo: AFP
The
first Lumia models in line to run the OS are the 510, 610, 710, 800 and 900.
First announced in November, its launch was officially delayed to 2013. At the same time, a string of new smartphones using Windows Phone 7.8 will become available, at a lower price point than Windows Phone 8 devices.