Mac OS X 10.7 Lion Golden Master has just been seeded for developers to download, the latest and possibly last dev release of Lion comes as build 11A511.

A GM build typically means a public release is due out in the very near future, meaning the Mac OS X Lion release date may be a lot earlier in the month of July than some originally expected.

Developers can download the GM seed directly from the Mac Developer Center on Apple.com

When Lion is released, it will cost $29.99 as a download exclusively through the Mac App Store. If you’re not a developer, start stocking up on discounted iTunes gift cards and you’ll be able to buy Lion at a discount come time for release, which very well could be next week.

Update: The GM build does not appear to be available via Lion’s Software Update, meaning you’ll have to use the App Store to download the new release.

Update 2: Lion Server GM, iCloud beta 3, and Xcode 4.1 dp7 are also available

Update 3: A public OS X Lion release date may be July 14th