We’ve just seen a test handset running Windows Phone OS codenamed Mango, and even though the update won’t be available until the Fall, it brings some much needed improvements and enhancements to Microsoft’s mobile platform. OS 7.1 will also be the OS that Nokia devices running Windows Phone will launch with. Looking forward to 4G support, threads, deep social integration, voice dictation, multitasking with app resume, and much more? Check out our hands on photos in our gallery.