In addition to iOS 8.4 beta 2, Apple also made available today to developers and beta testers the second test version of the OS X Yosemite 10.10.4. The first came out just under two weeks ago.
The new build (14E11f) ??continues to indicate improvements in stability, compatibility and security for Macs, without further details or known problems.
If you paint any relevant news about the update, we will update this article.