i'm not sure what the current
state of that documentation is right now, but i know there are at least
some important bits missing, probably including this.

for 15.0, you should simply not use pkgbase to install the new system,
since dists are still supported.=C2=A0 if you *have* to use pkgbase, e.g. you're using media that doesn't include dist sets and can't do = an online
installation, then you can delete /var/db/pkg immediately after booting
into the new system, before installing any ports.=C2=A0 the system will the= n
be more-or-less identical to one installed from dist sets, so you can
follow the usual instructions for updating from source.

for 16.0, the plan is to remove support for dist sets from the release
media[0], so we'll probably want a way to do this automatically in the<= br> installer.=C2=A0 that's TBD, but i'm planning on doing some work on= this part
of the release media once 15.0-RELEASE is out.=C2=A0 (right now, we want to=
minimise differences between main and releng/15.0 for release.)

[0] dist sets will still be supported for downstream consumers, but they won't be an installation option for FreeBSD.