Windows phone 7 and windows phone 8 differences

Question

任何人都可以提供关于Windows Phone 7和Windows Phone 8之间内核级别和核心功能差异的链接或博客文章吗？

Answer 1

From a developers point of view? : Nokia has a guide for side by side development highlighting the differences

Answer 2

You can see difference between Windows phone 7 and Windows phone 8 here .

Don't forget you've acces to the update system information here with new features by updates...

But all windows phone devices have not already the last version of the system.

Also, a new "Big Update" named "GDR2" ( it's the windows phone 8.1 version) is actually in progress for the windows phone 8... lot of websites list all new features for this update. here for sample .