FreeBSD 11.0-RELEASE upgrading comments

[Eric Rucker]

Hello,

I've noticed that I was unable to perform an upgrade directly to
FreeBSD 11.0-RELEASE from 9.3-RELEASE by following the directions in
this document: https://www.freebsd.org/releases/11.0R/installation.html

Upon attempting to run freebsd-update upgrade -R 11.0-RELEASE, I
received the error "The update metadata is correctly signed, but
failed an integrity check." I received no such error going to
10.3-RELEASE instead.

Is this a bug, or a documentation error?

Thanks,
Eric Rucker