There are many things that you can do to get the updates and other information about the latest software, even if you do not want to be in the program. As always, installing new beta software can be a pain in the neck and might not even work for you when it is downloaded and installed. You can avoid those headaches, but skipping the beta software and waiting for the official release.
In the meantime, you should be able to see what the beta software has to offer you by watching the videos that are always posted to YouTube. As soon as the next day, users already have videos they created themselves showing the new software posted for your viewing pleasure.
According to Apple fans, the Apple iOS 8.4 beta is a small update and really only brings features to the built in music application. Because the software update is so small, there are some that will wait until the next, larger update that comes along.