Lock Screen
● New chevron (>) arrow added to lock screen in front of "slide to unlock".
changing the lockscreen background now previews the lockscreen.
● Control Center pull up indicator is now just a line. Notification Center pull down indicator is also a line.
● Tapping on lock screen causes a sideward bounce -- prompts users to slide to unlock
● Changing the lockscreen wallpaper will preview the wallpaper with the lockscreen
Camera
● Removed "HDR" overlay in the camera app
● Live Camera Filters for 4S
● Tweaked 'Allow Photo Access' prompt
● Auto-focus square is now orange rather than green
● 'Summarise' option in Photos & Camera setting to make the views for photo collections more compact
● Picture previews aren't "negative" anymore
Phone
● Tweaked dialer call button
● Tweaked answer phone buttons
● You can now disable/enable contact photos in favorites
Music
● Shuffle artist songs
● Playlist download all button is back
Spring Board
● Folders now have better/proper color to match the wallpaper.
● Multitasking Previews are now live, not just a static image
Mail
● PDF files look different in mail app
● The gradient on the mail weather and safari icon's gradients are more subtle.
Messages
● You only see the first letter of a persons last name in the messaging app now.
Notification Center
● "Completed Uploads" in the settings for notification center
● Tabs are now capitalized
● You can now swipe between panels in Notification Center
Game Center
● Game Center settings now accessible
● You can forfeit/delete Game Center challenges within Game Center
Maps
● Frequent Locations can be used to improve Apple Maps, History of Frequent Locations is also shown differently
● Drive time now displayed under the blue car when selecting a location
General
● Dramatically improved response time.
● Animation times are much shorter and snappier.
● Spotlight tweaked, Cancel button in search fields
● Accessibility improvements with bold text
● In a selectable list, the options are now centered
● Apps that use the camera now use the iOS 7 camera
● Caps lock icon and shift icon tweaked
● Siri Q&A Screen when pressing the "?" icon in Siri
● Back button during setup says "back" instead of previous screen
● New iPad "2X' icon when viewing iPhone apps on iPad screen
● Minor Safari UI Tweaks, website without a Favicon show a Safari logo
● New Airplay Icons
● Slight Newstand UI Tweaks
● You can now select a sound for AirDrop alerts
● Compass calibration is now faster
● Screen brightness changes when closing passbook
● Few new icons in Settings.app
● Snooze during alarms says "Tap to Snooze" instead of just snooze
● Search in reminders app
● App Store opens in last section you were visiting instead of the default featured tab
● "Grabbers" have a new look (the tab that comes up for notification center when you're full screen/watching a video)
● Improved algorithm for detecting which font to display depending on wallpaper
● Second hand on clock icon is now active [Thanks @iGlassGuy]
● World clock shows how many hours behind or ahead you are from city
● Numerous crashes fixed
● We have received word that some users are have difficulties controlling music playback with their headphones (headset remote controls no longer working). We believe this is simply a bug and will hopefully be fixed by the GM release.