Nisam našao službeni changelog no evo kaj ekipa na Redditu piše:

•Notification center is now smooth, doesn't have split second lag on L925/L1520, renders up icons properly after restart.


•Searching for settings(i.e Sounds/updates and so on) was broken/disabled on GDR1


•You can no longer access hidden settings through bing.


•Fixed default search issue, it used to use Bing even though you used google, as well it gone out of private mode once you did a search through it.