XCode 4.1 and iOS SDK 4.2 V4B12c (2011) | 3.67 Gb
This is a pre-release version of Xcode 4.1, a major new release of Xcode for both Mac and iOS development. This release requires Mac OS X 10.7 Lion, and includes iOS SDK 4.2 and Mac OS X SDK 10.7, to develop apps for Mac, iPhone, and iPad. Please review the Release Notes and Readme before installing this software.