To all developers, Apple has released OS X El Capitan 10.11.4 Beta 2 Release to Developers for testing mode. the new OS X EL Capitan 10.11.4 help to fixes bugs and brings more improvements which include support for secure Notes.
The OS X El Capitan 10.11.4 update improves the stability, compatibility, and security of your Mac.
Apple has vulnerably told developers to focus and concentrate only on iBook, Messages, Notes and Photos.
If you are a developer and you will like to download the OX X El Capitan 10.11.4, you can download the Software Update Seed Configuration Utility from the link provide by Apple for developers below.