iOS 9.2. What's new??

So today,12th Dec I recieved my iOS 9.2 update and this is the most anticipated update after iOS 9.
This update is promised to fix a lot of bugs and bring performance upgrade to the iPhone 6 and 6s plus. 
So what is the changelog??.

Apple Music improvements
  • You can now create a new playlist when adding a song to a playlist
  • Your most recently changed playlist is now listed at the top when adding songs to playlist
  • Mail Drop in Mail for sending large attachments
  • iBooks now supports 3D Touch to peek and pop pages from the table of contents, your notes and bookmarks, or from search results inside a book
  • iBooks now supports listening to an audiobook while you browse your library, read other books, or explore the iBooks Store
  • iPhone support for the USB Camera Adapter to import photos and videos
  • Improved stability of Safari