Microsoft has officially launched Windows Phone 8 but yet we still haven’t heard a word about Windows Phone 7.8. Current Windows Phone devices will not be upgraded to the latest and greatest Windows Phone 8 but will et some features under 7.8.

Today however, Nokia China put up a “Lumia Experience Store” in Shanghai that included a bunch of Lumia phones to try out (even a MS Surface).

The big surprise however was that Nokia China also had a Lumia 900 running Windows Phone 7.8.

Nothin new was revealed however except for the new start screen. This is the only Windows Phone 7.8 related news we have heard from Microsoft or Noikia since it was first announced months ago aside from Microsoft Italy posting a bit of information a few days back.