What's new in iOS 7?

iOS 7 Major release of iOS. It has come up with a lot of things for users and the developers. UI has been completely redesigned and also come with a new animation system for creating games. 

I will list what's new in iOS 7.

• What's new in User Interface

• UI Redesign - UI has been completely redesigning and throughout the system, the focus has been on the functionality and making sure that things are easier than before. Introduction of the Control Center, Navigation around the settings menus with the swipe, Updated Notification Center, Accessibility updates, and Siri has just become more helpful than before.  
• 64 Bit Support - iOS uses the same LP64 model that is used by OS X and other 64-bit UNIX systems, which means fewer problems when porting code. Apps compiled with iOS 7 are compatible with both 32-bit and 64-bit. 64-bit means apps will be faster with extra processing power.
• Dynamic Behavior of Views -  Dynamic behaviors offer a way to improve the user experience of your app by incorporating real-world behavior and characteristics, such as gravity, into your app’s animations.
• TextKit - Text Kit is a full-featured set of UIKit classes for managing text and fine typography. Text Kit can lay out styled text into paragraphs, columns, and pages; it easily flows text around arbitrary regions such as graphics, and it manages multiple fonts. Text Kit is integrated with all UIKit text-based controls to enable apps to create, edit, display, and store text more easily—and with less code than was previously possible in iOS.
• MultiTasking Improvements 

• What's new in Games
• Sprite Kit Framework - The Sprite Kit framework (SpriteKit.framework) provides a hardware-accelerated animation system optimized for creating 2D and 2.5D games. Sprite Kit provides the infrastructure that most games need, including a graphics rendering and animation system, sound playback support, and a physics simulation engine. Using Sprite Kit frees you from creating these things yourself, and it lets you focus on the design of your content and the high-level interactions for that content.
• Game Controller Framework
• Game Center Enhancements
• Maps
• AirDrop
• Inter-App Audio
• Peer-to-peer Connectivity
• New Frameworks
• Objective C

You can refer to the iOS 7 Release Notes and also the interested developers can refer to the iOS 6.1 to iOS 7.0 API Differences.

Happy Coding!!!!