iPhone users are eagerly awaiting a flood of new accessories for current and future models of popular Apple phone, coming thanks to a sweeping set of upgrades for the iPhone's operating system.

Meanwhile, there's a whole shadow industry of hardware hackers who can't wait to get their hands dirty with the iPhone's new capabilities.

Apple recently unveiled a beta release of its latest iPhone software development kit (SDK) that enables greater connectivity to accessory devices and other hardware. New push notification services, along with improvements to the App Store that let iPhone users purchase content and services within applications, grabbed most of the headlines at the iPhone 3.0 SDK launch event.

But the changes in hardware options were also significant. With the SDK, Apple is letting developers create applications that can communicate with accessories wirelessly via Bluetooth or via the 30-pin dock connector on the device.

Damien Stolarz is one hacker looking forward to the changes

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