Windows phone 7.8 upgrade “will be announced soon”
During the yesterday presentation of Windows Phone 8, no mention has been made regarding the update for the current Windows Phone 7.5 smartphones to the new version of Windows Phone 7.8 , much to the chagrin of many users who were waiting for some news about the new functionality and the date of issue by Microsoft.
However, according to Nokia News Google + official page the upgrade to Windows Phone 7.8 will be announced soon:
"New on Wp7.8 will be announced soon - hang in there ;)"
At the moment the only change made known officially regards the 'interface of the Start Screen , which will be identical to that of Windows Phone 8, with the possibility to resize the Live Tiles in the new and smaller size. We also know that Nokia will continue to support its first generation Lumia smartphones (Lumia 610, 710, 800 and 900) with new unique applications that will build closely with developers from Microsoft.