content: The anniversary update replaced all the DRM, breaking compatibility with all applications that use them so that new versions of everything are forced to be made to go with it.  The main goal there was a more permanent breakage of the hacks to bring Windows Media Center to Windows 10.  This also broke all Zune store purchases among other things.  I remember reading that it also broke some WiFi controller drivers, preventing the download of a fix. Oh, you meant changed in a positive way.   Sorry, I got nothin.