Microsoft pushes Windows Phone Mango out to Japan • The Register

The next version of Windows Phone, codenamed Mango, is with device
manufacturers and looks like it will hit Japanese shelves in September,
with the rest of the world having to wait a little longer. Version 7.5 of Windows Phone is being touted as a proper version 1, a
grown-up version that finally brings multi-tasking to the platform as
well as some interface improvements and integrated services. Mango was
officially released to manufacturers on Tuesday, according to the Microsoft blog, and KDDI wasted no time announcing that it would be launching the first Mango handset in Japan by September.