I've heard alot of people complain that iOS 7 is just a new ui with no new functionality, and having used the beta for a while I can say that's just not true. Here's what I have so far
Live clock
True multitasking
Game controller support
Today view in notification center, which is lining up to be alot like google now
Recent links in safari, which is like a reading list of all the stuff your friends on Facebook or twitter post
Endless safari tabs
Live wallpapers
Timers are shown on the lockscreen
iTunes radio
Greatly improved siri, now it shows web searches in the Siri ui and you can edit your searches if it gets them wrong
Blacklisting for calls and texts
FaceTime audio calls
New square mode in camera app
Camera filters
Reliable iCloud that updates content in the background
Videos app lets you stream all videos wether they are synced or not
Level and Protractor in compass app
FaceTime is its own app
Background app updates
Weather app now shows sun rise/ sun set humidity, chance of precipitation and wind speed
Live clock
True multitasking
Game controller support
Today view in notification center, which is lining up to be alot like google now
Recent links in safari, which is like a reading list of all the stuff your friends on Facebook or twitter post
Endless safari tabs
Live wallpapers
Timers are shown on the lockscreen
iTunes radio
Greatly improved siri, now it shows web searches in the Siri ui and you can edit your searches if it gets them wrong
Blacklisting for calls and texts
FaceTime audio calls
New square mode in camera app
Camera filters
Reliable iCloud that updates content in the background
Videos app lets you stream all videos wether they are synced or not
Level and Protractor in compass app
FaceTime is its own app
Background app updates
Weather app now shows sun rise/ sun set humidity, chance of precipitation and wind speed