Even with Yosemite available to the public, Apple doesn’t have plans to halt its public beta program. The beta testers will still be able to receive future updates to play around with. Apple said in an email sent to the public beta users: “As a member of the OS X Beta Program, you will continue to be offered beta versions of OS X software updates on any Mac that you installed the beta on.”
Those who want to opt out also have the option to do so. Apple has provided instructions on how to opt out here.
Source: iMore