iOS 7 was released to the public with more than 200 features. The biggest being a 
top-to-bottom redesign of the user interface. Other new features include Control Centre, a panel that slides up from the bottom of any screen that allows settings like Bluetooth and AirPort to be toggled on and off, a number of new camera features, a new multitasking screen, AirDrop, iTunes Radio and more.

We have gathered a list of some of the major updates.

iOS 7 integrates Apple’s ad-hoc Wi-Fi sharing feature AirDrop for the iPhone 5 onwards, iPod Touch (5th generation), iPad (4th generation), and iPad Mini.
App Store
The App Store provides more search options by age range and introduces a new section called Near Me, which allows you to find out which apps are popular in your area. The App Store also has the ability for automatic app updating.
The new camera interface allows swiping between four different modes (video, photo, square photo, and panoramic photo) and offers live photo filter previewing.
Control Center
Similar to the Notification Center, Control Center is available by scrolling up from the bottom of the screen and provides access to settings such as airplane mode and brightness, media controls, AirPlay and AirDrop, and shortcuts to several apps including a built-in flashlight, compass, calculator, and camera.
Live wallpapers
There are seven “dynamic” wallpapers included in the operating system (note iPhone 4 does not receive live wallpapers due to hardware limitations). All seven have “bubble” designs with different colors. The bubbles in the wallpapers move based on the device’s accelerometers and gyroscope. Static wallpapers now move with the gyroscope in an effect called Parallax. Also, if a panoramic photo is taken with the native “Camera” app it will move, based on where the device is facing, and also based on input from the gyroscope.
iOS 7 builds on the limited multitasking introduced in iOS 4 and provides full multitasking for all apps. The multitasking layer also provides for background updating of apps, and previews of all running apps.
Music and iTunes Radio
Along with user interface changes, the Music app also integrates Apple’s iTunes Radio service, to initially launch in the United States in late 2013. Launch in Europe will follow later.
Photos in iOS 7 sorts photos by date and location, to the year level, and also supports sharing video through iCloud Photo Stream.
Safari in iOS 7 integrates the smart search field first used in Safari 6 for OS X and Mavericks’ iCloud implementation of iCloud Keychain. Other changes include infinite tabs, parental controls, and improvements to Twitter sharing and Reading List. The tab area has also been rearranged to look at the tabs from above rather than a paged front-on view.
Siri features a redesign to match the rest of the system, new male and female voices, greater control over system settings, and Twitter, Wikipedia, Bing, and Photos integration.
Trusted devices
New to iOS brings trusted devices, which the user is alerted with a warning screen when connecting their iOS device to their Mac/PC asking them to trust the currently connected computer.

Additional new iOS 7 features include a new Find My iPhone Activation Lock, that requires your Apple ID and password before you can turn off Find My iPhone, erase data or re-activate a device after it’s been remotely erased; FaceTime® audio for high quality calls over a data network; and new ringtones, alarms, alerts and system sounds.