Apple has released the software development kit for iOS 4.1 and iOS 4.1 beta for the iPhone and iPod touch. It is available only for registered iPhone developers.
iOS 4.1 beta is available for the iPhone 4, iPhone 3GS, iPhone 3G and iPod touch 3rd and 2nd gen. Apple might release iOS 4.1 for the iPad at a later date.
From Apple’s site: “iOS SDK 4.1 beta and iOS 4.1 beta are pre-release software and are considered Apple Confidential Information.”
Arabic version of this post on SaudiMac Arabic Edition.