received my pre-order about the same time as others. just upgraded 3 machines (from 4.5) in less than 90 minutes. my machines aren't super-customized, so sysmerge(8) works like a dream for me. i de-installed screen(1) and will start using tmux(1), as it's in base. thanks for the effort of doing that---screen was always among the very first packages i installed on a virgin system.
currently these machines don't handle any mail, but in the coming months, at least one will be so i look forward to exercising smtpd(8) a bit. grazie mille!
