Back near the start of the month, we heard a rumor that in addition to the Windows Phone 8 gear it was preparing to reveal (and subsequently has), Nokia was also developing a new Windows Phone 7.8 model, to arrive as a larger-screened version of the Lumia 610. We heard that model referred to by codename “Glory” then, but now we may have the handset’s official name, as certification documents in China reveal Nokia’s Lumia 510.

Sure enough, this is still a low-end model, with that same 800MHz processor and 256MB RAM used in the Lumia 610. Like was rumored, though, the 510 steps things up to a four-inch WVGA display. As we can see from the images of the handset, it appears to keep the old-style Windows logo.

According to this, the handset would actually launch with Windows Phone 7.5, presumably upgrading to WP7.8 in the weeks and months to come. Right now it’s only expected for China, so we wouldn’t get our hopes up about seeing this guy in the West anytime soon. Unlike Nokia’s multi-colored Windows Phone 8 models, the Lumia 510 may only be arriving in black.

Source: Blog of Mobile!!