One of the most impressive apps that Apple demonstrated at WWDC was iMovie, a video editor designed for the iPhone. We already knew it would require iOS 4 to run. But it looks like you won’t just need a software update to use the app — you’ll also need Apple’s latest hardware, because iMovie requires an Apple A4 processor — which is is only available in the iPhone 4 and the iPad.
In other words, you won’t be able to use iMovie on the iPhone 3GS or earlier devices. That’s because it’s a resource-heavy app that simply wouldn’t perform very well on older hardware.
The app also won’t be available for the iPad… at least not at launch. It’s not entirely clear why there won’t be an iPad version, but it may have something to do with the screen resolution, while it could also have something to do with the fact that the iPhone 4 has built-in cameras while the iPad does not.
The folks at TidBITS have more details about iMovie, which is scheduled to launch in the App Store on June 24th. It will sell for $4.99.