Where can I download a full OS X 10.11.1 Public Beta installer? I have a bootable OS X drive that I like to keep up to date, but with the replacement of "Install OS X El Capitan Public Beta" with "Install OS X El Capitan GM Candidate" in the App Store, I'm not sure where I can get the latest beta of 10.11.1. Does the app named GM Candidate now contain 10.11.1, or does 10.11.1 just not exist in fully-downloadable form?
I believe, unless you have a paid developer account, the only way to get it is to download thru the app store.

I installed the GM version and the .1 update was offered to me as well. So you should get the GM and then the .1 update too.