As promised we are back with an update to iOS 7.1 now with beta 2. But once again not much for the user to see. No new UI change or some new feature.
iTunes: With this update loading a large iTunes Match library should no longer take an especially long time.
Audiobooks: Some have complained that Audiobooks fail to play. This also will be fixed.
iCloud: If you create a new iCloud account during setup assistant, you may encounter an error when trying to enable iCloud Keychain.
Notes: A compatibility behavior has been added to address an issue where some web servers would send the wrong Content-Length value for “Content-Encoding: gzip” content.
Other unknown issue: 32-bit apps running on a 64-bit device cannot attach to BTServer.
Keyboard: The keyboard is now white and not dark but devs still have the option
Buttons and text: If you were confused weather some buttons wear just labels? In iOS 7 they will be grey or have a underlined text
Control center: Now when you pull up the swipe up control center it will have a bounce to it.
Animations: Animations are just all around more snapper
As always we will keep up to date with new information.
Source:Apple inc.