updated 11:20 am EDT, Thu October 24, 2013
More timely than some past disclosures
Apple has officially released the updated open-source components found in OS X Mavericks. Under the terms of licensing agreements, Apple is obligated to share any modified open-source code with the public. The company does this with both OS X and iOS.
It has, however, sometimes been lax about publishing code, sometimes by as much as several months. With Mavericks, Apple may be taking its obligations more seriously.