In a feature comparison supposedly leaked and posted up at WP7Forum.ru (http://wp7forum NULL.ru/sravnitelnaya-tablica-funkcionala-windows-phone-8-i-windows-phone-7-8/), we get an idea of some more differences between the Windows Phone 7.8 and Windows Phone 8 updates.
Both updates are set to release later this year. Some of the “leaked” features are kind of common sense, or already known, while others are a surprise.
(http://blogs NULL.tieto NULL.com/mobileworld/files/2012/07/wp7_8vswp8 NULL.png)
As you’ll notice in the image attached, there are many features which will be unique in their own way to each update. WP7.8 will remain with IE9 on board, while WP8 will receive the probably ( I hope so) much faster IE10 browser. Skype will not receive integration on WP7.8, while Windows Phone 8 will receive Skype integration. The future of Skype was already known in some form to turn out this way, considering it would probably be best to reserve integration for more powerful devices.
More Informations you can find at WPCentral (http://www NULL.wpcentral NULL.com/rumor-leaked-details-windows-phone-78-shows-little-new-features-wp8-may-get-intonow-alternative).