One thing though, I notice the "release candidate" option installs from the 3.11 branch. Is there anyway the GUI can figure out which branch its pulling from and display that so that users know they're testing a potential 3.11.3 and not an upcoming 3.12 release?
Oh, the release candidate
Currently the server announces a release candidate that actually isn't a release candidate -- it's been built to test the release candidate support in the build system during DevCon. Apart from that is Rockbox Utility able to display the version for the RC only the way the server announces it. Optimally a RC should be announced with something like "3.11.3-RC", and also have a matching tag in git.
So for everyone testing those binaries, please don't install the release candidate builds