Earlier this afternoon Apple released the very first beta for iOS 4.1 along with the software development kit (SDK) to all developers. Unfortunately, there has been no word on what changes have been made within the software from Apple. If you are a developer and notice anything worth a mention, be sure to let us know.

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Update: what about iOS 4.0.1 and iOS 4.x for iPad? And what's the deal with the new iOS 4.1 signal bars algorithm?