Over the course of the last two days, Apple has seeded two bug fixes for developers using OS X Mavericks Preview 3, which was first released on Monday. The first minor update, pushed yesterday, was aimed at updating the OS X Recovery function.
OS X Mavericks introduces a number of significant changes to the operating system, including a tabbed finder, full screen dual monitor capabilities, and Safari improvements. Mavericks is expected to be released in this fall after regular updates to the beta software.
Article Link: Apple Seeds Two OS X Mavericks Preview 3 Bug Fixes