OS X El Capitan GM Candidate Available For Download Today
If you are currently testing OS X El Capitan, please back up your Mac and do the following to install the GM Candidate. Go to your Purchased tab in the Mac App Store and click the Download button next to OS X El Capitan GM Candidate. Then click Continue to download the full OS X installer. When your download finishes, the installer will automatically launch. Follow the onscreen instructions to complete installation.