iLounge

Apple has released an updated version of its iPhone Software Development Kit that now includes Interface Builder, the company’s tool for designing the interface of iPhone applications. The new release, which is available as a free download for registered iPhone developers from the iPhone Dev Center, is a 1.36GB download, and is listed as build 9A2151. It remains unclear what other changes may be present in the new release; we will update this story with any new information we discover.

Update: Following installation of the updated SDK, two folders, formerly listed as Aspen.platform and AspenSimulator.platform, have been changed to iPhoneOS.platform and iPhoneSimulator.platform, respectively. As the folder title would suggest, the iPhone OS simulator formerly known as Aspen Simulator is now called iPhone Simulator, and is a later build (40) than the previous version. In addition, the version of the iPhone OS listed in the simulator has been changed, from v1.2 (5A147p) to 2.0 (5A225c), most likely to reduce confusion. A new version of Xcode is also included in the new version of the SDK, with updated component versions, and a new start screen which lets the user choose between iPhone resources and Mac OS X resources. As expected, the new version of Interface Builder lets the user choose to build Cocoa Touch interfaces (pictured).