[upofadown]

Just a reminder: you still have to read the preupgrade stuff before and do the manual file deletion stuff afterwards even if you do sysupgrade. Most will need to do the pkg_add -u after all that. Here is the link (I always have to look for it):

* https://www.openbsd.org/faq/upgrade66.html

[linfocito]

There is 'sysclean' in packages, which make that step easier.