Apple on Tuesday released the fourth beta of iOS 8.4, technically called build 13A4254v. As we already know from earlier releases, it includes the new Apple Music application that will be available for all to try on June 30, and we assume iOS 8.4 will be available to consumers before then.

iOS 9, the next major release, is set to arrive this fall likely with the introduction of new iPhones. It’s the big release that will include major changes to Siri, Search, Maps and more. This release will, save for Apple Music, also likely include bug fixes and performance enhancements, which is typical for the incremental deployments.

Developers should receive a prompt to install the fourth iOS 8.4 beta. Consumers will likely need to wait until the end of the month to try it out.