With the availability of OS X Yosemite in the Mac App Store, Apple isn't stopping an end to the public beta program it had created to allow customers to test new features before a larger launch. Instead, Apple will continue the beta program for customers who had participated in the OS X Beta Program. However, if you're done being a tester, Apple is also giving you an option to opt out of future beta updates as well.
In an email sent out to the public beta community, Apple wrote:
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.
If you want to opt out of the program, Apple also provided instructions on its page.
Are you happy to see Apple continuing the public beta program?