Lumia 920 and HTC 8X testing

Computer store news: Alan of AdDuplex, an ad network company, noticed that Windows Phone 8.1, Windows Phone Blue, has begun testing on some existing devices, including the Nokia Lumia 920 and HTC 8X flagship phones. The highest is a mysterious device Nokia P4301 – an old WP8 test device.

For now, it's unclear what new features are included in Windows Phone 8.1 and is expected to be available by the end of this year or early next year. WP8.1 is code-named Blue – Blue updates further unify the application model and developer platform for Windows Phone 8, Windows 8/RT. According to previous rumors, GDR2 and GDR3 will be updated twice before the Blue update, and the latter GDR3 will also bring 1080p screen and quad-core processor support.