OS X El Capitan 10.11.2 features bug fixes as well as other improvements such as:
- Wi-Fi reliability has been Improved
- The reliability of Handoff and AirDrop has been improved
- iCloud Photo Sharing for Live Photos has been improved
- An issue that caused Bluetooth devices to disconnect has been fixed
- An issue that prevented Mail from deleting messages in an offline Exchange account has been fixed
- An issue that prevented importing photos from an iPhone to a Mac using a USB cable has been fixed
Apple