: Introduced full Unicode 7.0 and 8.0 support, including the taco, burrito, and "middle finger" emoji.
Since 10.11.1 is a point release, it includes all primary El Capitan features: OS X El Capitan - App Store - Apple Mac OS X El Capitan 10.11.1 (15B42) InstallESD
The InstallESD.dmg file is the "Electronic Software Delivery" disk image containing the actual system files needed to install or restore the operating system. Key Features & Fixes in 10.11.1 : Introduced full Unicode 7
: Resolved issues where outgoing server information might be missing and fixed a bug preventing the display of messages and mailboxes. including the taco