As has become the weekly ritual, Apple on Tuesday released a fourth developer beta of OS X 10.11.2 El Capitan, about a month after the release of 10.11.1. The new build, 15C47a, contains the same general notes as the other betas in the series, focusing on bug fixes and performance tweaks rather than introducing any new features. Apple has been in the habit of releasing an identical version for pre-registered public beta testers later the same day or the next day.