The new stock apps all feature sliding, gesture-based navigation. Folders can now support hundreds of apps — the 12- to 16-app limit is now gone. Notification Center has been redesigned with greater control over how many notifications you can view at once and the ability to view Notification Center from the lockscreen.
Control Center is the name of the new swipe-up menu that gives you quick access to commonly used functions. It lets you toggle airplane mode, Wi-Fi, Bluetooth, flashlight, brightness, and more. Needless to say, iOS users have been asking for this feature for a long time.
Multitasking has been upgraded with support for all apps, not just the limited services or stock apps that earlier versions of iOS were constricted by. Apple says that the new features let apps update in the background — without affecting battery life — and it has smart features to update certain apps during certain times of the day or when you have stronger wireless coverage. Push notifications now trigger apps to update in the background so that apps are always updated with the new content so there is no more waiting for them to refresh when you open. The new card-based multitasking interface is strikingly reminiscent of webOS with large previews of each app.
Apple's Safari mobile browser now features improved full-screen browsing, gesture-based navigation, and a new flipping card tab overview that is very similar to the interface in Google's Chrome for iOS and Android. The separate search bar is gone and you can now perform searches right from the address bar.
AirDrop is a new feature in iOS 7 that lets you share content with other iOS users through the Control Center. It works on the iPhone 5, fifth-generation iPod touch, fourth-generation iPad, and iPad mini.
Camera and Photos
The camera has been refreshed with improved UI and and filters. Also upgraded is the Photos app, which features the same flat redesign as other stock apps. Photos can now be viewed by date, including an overview of all of the pictures you've taken in a particular year. It also has gesture-based pop-up previews of images that you bring up by sliding your finger across the grid of images. In addition to sharing still images, Photos supports sharing of video through iCloud too.
Siri in iOS 7 features a predictably flat new interface (no more linen!), and has been upgraded with new voices, so you can choose from either a female or male voice in English, French, or German, with more languages added over time. Siri can now control functions such as toggling Bluetooth or controlling brightness. The service can search Twitter, Bing, and Wikipedia to provide more information for queries.
iOS in car
iOS's in-car functionality has been greatly improved with version 7 — it's now possible to have iOS on-screen in a number of new cars coming in 2014. You can control the system — place calls, play music, look up directions — all with your voice thanks to the improved Siri integration.
The App Store is getting the ability to show you apps that are popular for where you are, such as in a museum, for example, and also features automatic app updates in the background.
One of the biggest upgrades to iOS 7 is in the new music player, which features a brand-new user interface and Apple's new iTunes Radio service — the company's answer to the streaming music services such as Spotify, Rdio, and Google Music All Access. iTunes Radio lets you choose songs to listen to on-demand, and it has the ability to curate radio stations based on particular songs, artists, albums, or genres. It's very similar to how Pandora works. iTunes Radio works on iPhone, iPod touch, iPad, and iTunes on the Mac and PC. It's provided for free with ads, but iTunes Match subscribers can listen to it ad-free. It will be available in the US to start.
Other new features for iOS 7 include notification sync across devices, FaceTime audio calls over Wi-Fi, better search in Mail, and the ability to block, phone calls, FaceTime calls, and messages. It is available for the iPhone 4 and later, iPad 2 and later, and the fifth-generation iPod touch. Developers can download a beta of it on the iPhone today, while the rest of us will have to wait for its official release later this fall. TheVerge