Apple seeds first iOS 5.1 beta, Xcode 4.3 beta (release notes included)

Apple has just seeded iOS 5.1 to developers, a pre-release version of iOS that runs on the iPhone, iPod touch, and iPad. In addition, Apple has released Xcode 4.3 beta to developers, a required version of Xcode for those wishing to develop and test their applications with iOS 5.1 devices. This iOS 5.1 release is crucial. The 5.1 beta brings along an under-the-hood change for alternative interpretations for Dictation input in different apps. We’re looking into this API change.

We’ve also found some references to a new iPad in the code.

iOS SDK 5.1 provides support for developing iOS applications and includes the complete set of Xcode tools, compilers, and frameworks for creating applications for iOS and Mac OS X. These tools include the Xcode IDE and the Instruments analysis tool among many others.

With this software you can develop applications that run on iPhone, iPad, or iPod touch running iOS 5.1. You can also test your applications using the included iOS Simulator, which supports iOS 5.1. There are two Xcode iOS SDK 5.1 images, one for installing on a Macintosh computer running Mac OS X 10.6.7 (Snow Leopard) or later, the other for installing on a Macintosh computer running Mac OS X 10.7 (Lion).

This version of iOS is intended only for installation on devices registered with Apple’s developer program. Attempting to install this version of iOS in an unauthorized manner could put your device in an unusable state.

Along with the release notes, you can also find some new features we’ve found in iOS 5.1 after the break:

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