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Apple has recently released firmware 3.0 Beta 3, build 7A280f, to developers. Along with the firmware there are also updates to the SDK. Changes include performance improvements, user interface updates and alterations to Spotlight search. How does this affect you? Well one big issues with Beta 3 is it will not run apps that aren’t made for 3.0. This means none of your apps would work but the ones you’ve developed for 3.0 yourself. (as of writing this article, beta 3 is not jailbroken either.)

UPDATE: The note below is for the emulator in the SDK, not for the firmware on the iPhone. (Thanks to Tetanus in the comments for this info)

“Applications targeting devices prior to iPhone OS 3.0 beta cannot be tested in this seed, this bug is intended to be ?xed in a future seed.”

Arstechnica also notes there are updates to the API:

The major change in the UIKit API is that Apple has added separate types for the three notification methods: badge, text alert, and sound. Developers can register their apps for these different notification types individually for the needs of their users. Previously, apps registered to received remote notifications but controlled the type via settings. Developers we spoke to universally agreed that this was a welcome improvement.

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Tags: 3giphone, Downloads, Firmware 3.0, Software