These are DEVELOPMENT builds — what the test servers run. They install beside production, never over it.
Current
what a new machine should be given todayNothing has been published to this channel yet.
Earlier
every release, newest firstNo earlier releases.
Every file here is signed with the ABM Service certificate; the setup installs its trust. The current setups have a permanent address that never changes. A dated copy stays in the archive for 60 days from the day it was published, give or take a day, and then the bucket deletes it; every release's record stays for ever, whether or not its file is still there.