Apple has seeded the third build of Mac OS X 10.6.4 build 10F50 to developers as Build 10F46 was rolled out in first week of May 2010 whereas Build 10F37 was released in April 2010.

The latest Mac OS X 10.6.4 build 10F50 includes several fixes which were identified in the previous build 10F46 and its size is about 581.3 MB.

This is also speculated that it could be the last build of Mac OS X 10.6.4 and at WWDC 10 event which is going to start in June, 2010 Apple will launch final Mac OS X 10.6.4 version accompanied with iPhone 4G launch with several other announcements.