I can confirm a few things:
Random wireless connects/disconnects along with dhcp issues. Had to disable wireless.
Concerning virtualbox permissions, even after adding my user account to the vboxusers group [though: does something need to be restarted for changes to take effect?] and
chown root:vboxusers /usr/local/lib/virtualbox/*
it was still necessary to
chmod o+x /usr/local/lib/VirtualBox
to get it to run, which feels really icky (and I’ve yet to run a guest because this browser is in a bhyve guest and apparently vbox guests won’t run while bhyve guests are running…)
The update fixed resume from suspend, which did not work at all in 17.02 [the first version I tried]. That became flaky at one point, which was before I disabled wireless. Since wireless was disabled, it seems to be working again but n < 6. [And I suppose wireless might have been an issue preventing wake before the update but I’ll never know…]
vim wasn’t removed for me.