On Tuesday, Apple released numerous security updates for iOS, OS X, and the AirPort Base Station.
Security Update 2014-002 for OS X Lion (10.7.x), Mountain Lion (10.8.x), and Mavericks(10.9.x) fixes a total of 13 vulnerabilities in a wide variety of system components, including image processing, HTTP protocol, and Ruby.
An SSL bug that allowed a "triple handshake" attack that could reveal the contents of communications was patched, but this is separate from the Heartbleed bug. Apple has not used OpenSSL in iOS or OS X for some time.
But the AirPort Base Station does still use OpenSSL, and a firmware update to that device patches the Heartbleed bug.