IOS 6.13

Hi Everyone, Wondering what new voice over (if any) features in the latest IOS update. Also wonder what bugs may be in the new upgrade. Have any issues from previous 6.xx versions been fixed too? I haven't updated since 6.0 because I had heard about different issues from reviewing comments in this forum. Want to make sure it's a good idea to upgrade before doing so. Appreciate any & all comments & advice. Thanks, Adam