However, if Baidu tips are correct, the 510 may be an ever-so-slight upgrade to its higher-digit predecessor with a larger 4-inch screen and a likely fast track to Windows Phone 7.8. Just don't anticipate more than the existing 800MHz Snapdragon, 256MB of RAM and 5-megapixel camera -- or a US release, for that matter.
Nokia Lumia 510 put under the regulatory limelight, hints low-cost Windows Phone 7.8 on the way - Engadget
https://imgur.com/WelZq
Nokia Lumia 510 put under the regulatory limelight, hints low-cost Windows Phone 7.8 on the way - Engadget
https://imgur.com/WelZq