Apple has today released OS X 10.11.4 to this public. This comes after seven betas to developers and over two months of testing. In this version we see only some minor improvements. The more notable things include the ability to password protect notes in the Notes app, view Live Photos in the Photos app, and the ability to view Live Photos in the Messages app. Other bug fixes include:
– Addresses an issue that may cause RAW images to open slowly in Photos
– Adds the ability for iBooks to store PDFs in iCloud, making them available across all your devices
– Fixes an issue that prevented loading Twitter t.co links in Safari
– Fixes an issue that prevented the VIPs mailbox from working with Gmail accounts
– Fixes an issue that caused USB audio devices to disconnect
– Improves the compatibility and reliability of Apple USB-C Multipart Adapters
To get this version go to the Mac App Store > Updates > Software updates > OS X 10.11.4.