iOS 5.0 / iCloud 업데이트에 맞춰 XCode 4.2 업데이트가 출시되었습니다.



- Includes SDKs for Mac OS X 10.7 Lion and iOS 5
- Storyboards let you design multiple iOS screens, and define the segues among them
- Automatic Reference Counting (ARC) saves you from manually managing retain/release
- iCloud entitlements are automatically enabled for Mac and iOS apps
- OpenGL ES Debugger graphically analyzes your OpenGL scene directly within the IDE
- Apple LLVM compiler supports C++11 features and the LLVM libc++ standard library
- Older iOS Simulators and device debugging symbols are downloaded on-demand

Enhancements and fixes in previous Xcode updates:

- Interface Builder support for Auto Layout and new Aqua controls such as NSPopover
- Full screen support in workspace, project, and organizer windows
- Project editor can validate and resolve out of date build settings
- Behaviors can be customized and assigned to unique key bindings
- Source control enhancements to pushing, pulling, and management of remote servers
- Assistant editor support for display of generated assembly and preprocessed output
- Additional bug fixes and stability improvements

일단 iOS 5 / OS X 10.7 지원이 가장 큽니다. 또한 Storyboard기능을 이용할 수 있고, ARC(Auto Reference Counting)을 활용할 수 있습니다.

http://itunes.apple.com/kr/app/xcode/id448457090?mt=12

Mac App Store에서 무료로 업데이트 받을 수 있습니다. 
Posted by Parker Falcon