OS X Yosemite 10.10.4 (14E11f) Now Available for Developers

[Aziz]

https://developer.apple.com/news/?id=04272015c

"The update, measuring in at 941 MB, continues to highlight “stability, compatibility, and security” as areas of improvement."

[SGill]

Edited

[RobertHammen]

NDA NDA NDA. Don't violate your NDA.