Microsoft has officially previewed the next major release of the Windows Phone 7 platform. It's code-named 'Mango' and will include more than 500 new features.
This update will be available free to existing Windows Phone 7 customers and is expected to be included on new phones from the autumn. Those new phones will be produced by Microsoft's existing partners - including Nokia - and by new manufacturers including Acer, Fujitsu and ZTE.