Apple has seeded the Xcode 4 Gold Master (GM) build to developers. The previews have been available for a quite a while now, but it seems to be final. It was posted briefly before, but it was pulled when references to Mac OS X 10.7 Lion were found.

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There is a significant change with the GM release versus the betas. The change is that Xcode 4 can be used to submit iOS applications to the App Store. During the previews this was not possible.

The biggest changes in Xcode 4 are these: Single Window for Development, Interface builder built in instead of a separate application, and documentation download right after installation. Once Xcode 4 is released to the general public, we’ll have a full walkthrough of Xcode 4 and its new elements and features.

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If you’re a developer you should go and download your copy now. It is 3.7 GB in size, so it may take a while to download.

Article Via TUAW