Nokia's next generation smartphone and their Lumia 720 handset successor model, which was announced back early in 2013, dubbed as the new impending Lumia 730 is here in pictures showing off it's front and back to the camera. The new Nokia Lumia 730 smartphone is said to be Microsoft's forthcoming middle-ranged Windows Phone device, that is internally codenamed as Superman and the phone in the Green shade from the above picture is one of those from the late development prototype property by the Redmond manufacturer, according to the reports of Windows Phone Central.
The phone we see here is speculated to be a smartphone for the growing selfie market, as it is rumored to feature a five megapixels front facing secondary snapper, which is something new in the Windows Phone perspective, a 4.7-inches of screen size and the company seems to be working on a new firmware based on Windows Phone 8.1 Update 1 or Update 2, that is for the time being called as 'Debian Red', which is said to be the name of a color, similar to how Microsoft named the Lumia Black update as 'Bittersweet Shimmer' and the current Lumia Cyan update as 'Cherry Blossom Pink'. And as also mentioned in the reads of Windows Phone Central, the firmware build names for the American computer software and consumer electronics company's mobile operating system goes in alphabetical order, alike Android, which started off with the letter A for Amber, B for Black, C for Cyan and now D for Debian Red.
Source: Windows Phone Central