Here comes an opportunity for Windows Phone Developers to try out the GDR3 update before it reaches to the actual consumers. If you are a WPDev, you can now download Update 3 in your unlocked WP8 device and test your applications against it.
Windows Phone 8 GDR3 comes with a plenty of features and enhancements including bigger screen resolutions, screen rotations and more. Read to get the GDR3 bits in your device.