Just before the release of OS X Mountain Lion last year, Apple extended its beta program to certain Apple retail store employees. The company is following up this year with a similar program for OS X Mavericks.
You are invited to participate in the pre-release OS X Mavericks seed program. Participation, including submitting feedback, is completely voluntary and not an expectation of your job. If you accept, we will provide you with a pre-release version of OS X Mavericks to install and use. You will get to preview all of the exciting new features like iBooks, Maps, Calendar, Safari, iCloud Keychain, Multiple Displays, Notifications, Finder Tabs, Tags, and much more! You should use OS X Mavericks only your personal computer and on your personal time. Apple will provide you with ways to submit feedback on your experiences with OS X Mavericks, should you choose to do so. Apple also asks that you use future builds of OS X Mavericks as they are made available. The responses from prior seed programs have been overwhelmingly positive. Thank you to everyone who participated!
Apple has also provided prerelease versions of the new OS to its AppleSeed beta testing group.