Apple today seeded the second beta of an upcoming OS X 10.11.2 El Capitan update to developers, one week after seeding the first beta and two weeks after releasing the first OS X El Capitan update to the public, OS X 10.11.1.

The new beta, build 15C31f, can be downloaded through the Apple Developer Center and through the Software Update mechanism in the Mac App Store.
It is not known what improvements the second update to OS X El Capitan will bring, but it’s likely to focus on bug fixes, security enhancements, and performance improvements to address issues that have been discovered since the release of OS X 10.11.1. Apple’s beta 1 release notes asked developers to focus on Graphics, Mail, Wi-Fi, Calendar, USB, Notes, Photos, and Spotlight.