Following today’s earlier release of iOS 7 Beta 2 for all current iOS devices, Apple has now seeded OS X Mavericks Developer Preview 2 as well. The update is available through the Mac App Store on machines that already have the first preview installed, but so far is not available for direct download from either the Mac App Store nor Apple’s developer portal.
The build number for the new preview comes in at 13A497d. New previews of Xcode 5 and OS X Server are also available for immediate download from Apple’s Mac Developer Center. We’ll let you know if and when a direct download becomes available (as it could be useful for a fresh install, etc).