Among the announcements made by Apple today at the iPhone OS 3.0 preview event was newly-touted accessory compatibility for the updated OS. Using new APIs made available in the iPhone OS 3.0 SDK, accessory makers will be able to write custom applications that communicate directly with their hardware via the 30-pin Dock Connector or wirelessly over Bluetooth. While Apple used both an on-screen speaker equalizer and an open-station finder for an FM…
