Apple has released OS X Mavericks GM to those registered with the Mac Developer program. The GM (Golden Master) build is the final release version of OS X 10.9, ending the Developer Preview beta process and indicating that a wider public release of Mavericks will arrive shortly in the coming weeks.
Registered developers can download the GM build from the Mac App Store as usual. Those interested in performing a clean install can use a redemption code to download the installer, which can then be made into a Mavericks install drive using a USB stick or external drive.
The build number for OS X Mavericks GM is 13A598. Along with the OS X Mavericks GM build are Xcode 5.0.1 GM seed and OS X Server Preview 9.
OS X Mavericks includes many new feature enhancements and improvements for Mac users, including Finder tabs, Maps for OS X, advanced power management features, Finder tagging, and many smaller refinements throughout the operating system.