Apple to Developers: Update Your Apps for iOS 5.1

Following the release of iOS 5.1 earlier today, Apple has updated its developer portal with a new “Create Apps for iOS 5.1” webpage, asking developers to start submitting apps written specifically with the iOS 5.1 SDK. The checklist includes links to the iOS 5.1 SDK release notes, Xcode 4.3.1 for developers, and a detailed explanation of the various functionalities introduced in iOS 5.

iOS 5.1, the latest version of the world’s most advanced mobile operating system is now in the hands of millions of iOS customers. Install iOS 5.1 now and download Xcode 4.3.1 with iOS 5.1 SDK from the Mac App Store, so you can test and submit your iOS 5.1 apps today.

Furthermore, Apple has updated the iOS Human Interface Guidelines with new icon size information, as well as the iOS App Programming Guide.

Developers can head over this page to check out Apple’s resources for developing and submitting iOS 5.1 apps.