iOS 6 will soon be in the hands of hundreds of millions of iOS customers. To prepare your apps for submission, download the GM seeds for iOS 6 and Xcode 4.5 and test your existing apps for compatibility. Be sure to review the updated App Store Review Guidelines and the iOS 6 Readiness Checklist, and submit your apps today. Sign in .
We have extended the deadline for sandboxing your apps on the Mac App Store from March 1st to June 1st to provide you with enough time to take advantage of new sandboxing entitlements available in OS X 10.7.3 and new APIs in Xcode 4.3. Get more details about sandboxing your app and find answers to FAQs. Learn more .
Xcode 4 is now available to all Mac and iOS Developer Program members. Xcode 4 has a streamlined new interface that integrates UI design, coding, testing, and debugging, all within a single window. The embedded Apple LLVM compiler underlines coding mistakes as you type, and is even smart enough to fix the problems for you automatically. Learn more about Xcode 4 .