OS X 10.11.4

OS X 10.11.4 was an update to OS X 10.11 (El Capitan) that was released by Apple on March 21, 2016.

Features
This update includes the following:
 * Adds the ability to passcode-protect notes containing personal data in Notes
 * Adds the ability to sort notes alphabetically, by date created, or date modified in Notes
 * Adds support for the 7th generation iPod touch.
 * Adds the ability to import Evernote files into Notes
 * Adds support for sharing Live Photos between iOS and OS X via AirDrop and Messages
 * Adds the ability for iBooks to store PDFs in iCloud, making them available across all your devices
 * Prevents JavaScript dialogs from blocking access to other webpages in Safari
 * Improves the compatibility and reliability of Apple USB-C Multiport Adapters

Bug fixes

 * Fixes an issue that prevented the VIPs mailbox from working with Gmail accounts
 * Addresses an issue that may cause RAW images to open slowly in Photos
 * Fixes an issue that prevented loading Twitter tico links in Safari
 * Fixes an issue that caused USB audio devices to disconnect

Enterprise content

 * Fixes an issue that could cause a black screen after logging in as the root user
 * Fixes an issue that prevents using screen sharing to remotely click the Allow button or Always Allow button in Keychain Access
 * Fixes an issue that prevents Migration Assistant from opening when automatic login has been disabled using a configuration profile
 * Fixes an issue that prevents Mail from showing the date and time of certain Microsoft Exchange calendar events
 * Provides compatibility with the Cisco AnyConnect VPN client
 * Improves the reliability of connecting to a Personal Hotspot via Wi-Fi

For detailed information about the security content of this update, see Apple Security Updates.