Just a little over a week after releasing OS X 10.9.2 to the public, Apple has seeded the first test build of OS X 10.9.3 to registered Mac Developers.The new beta has a build of 13D12.
Apple is requesting that developers concentrate on graphics drivers and audio. No other word was available on any specific changes or fixes may be present in the seed.
The seed is available to developers via Software Update in the Mac App Store, and via the Mac Developer Portal.
