From the Release Notes:
> The default pkg(8) repository set in /etc/pkg/FreeBSD.conf now defaults to the quarterly package set. To use the latest branch (as was the previous default), the comment at the top of /etc/pkg/FreeBSD.conf explains how to disable the default repository and specify an alternative repository.
If I'm reading /etc/pkg/FreeBSD.conf correctly, swapping over to use HEAD instead of the Quarterly branch is as simple as creating /usr/local/etc/pkg/repos/FreeBSD.conf with the following content?
FreeBSD: {
url: "pkg+http://pkg.FreeBSD.org/${ABI}/latest"
}
edit: originally I replicated all of the contents of /etc/pkg/FreeBSD.conf in /usr/local/etc/pkg/repos/FreeBSD.conf, but based on pkg.conf(5), the contents of the latter override keys in the former, so you only have to specify the differences