You can submit 64-bit apps for iOS 7 today that take advantage of the power of iPhone 5s. Xcode can build your app with both 32-bit and 64-bit binaries included so it works across all devices running iOS 7. If you wish to continue to support iOS 6 then you will need to build for 32-bit only. Next month we will be making changes that will allow you to create a single app binary that supports 32-bit on iOS 6, as well as 32-bit and 64-bit on iOS 7. Learn more .
As a Registered Apple Developer, you already have free access to developer tools and resources for creating iOS apps and Mac apps. Now you can take advantage of more great content, with access to pre-release documentation, videos, and sample code. You can also sign in to view discussions in the Apple Developer Forums and gain further insight into developing for iOS, OS X, and more. Sign in to Member Center .
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 .