Re: Upgrading from Yosemite Beta Program to final release?
You can upgrade (OS X Yosemite should be in your Mac App Store > Purchases tab), but it is not necessary. (I was a part of the Developer / Apple Seed program.) Here's what I got via email from Apple yesterday:
Originally Posted by iMore Question
There are only minor differences between the last seed build (14A388a) and the build posted to the App Store (14A389). The full OS X Yosemite installer is available as a free upgrade in the App Store. Following installation, look for a software update for iTunes 12. If you still experience critical issues with this build, the project will remain open for your feedback.