To put things in perspective, the dpb framework is now about two years old. It was a bit quirky and experimental until 4.9.
The addition of /usr/ports/infrastructure/man to man.conf happened a little before 5.0. So, people wanting to build packages *for current* should have no problem accessing that information... if they do, they're probably not fit to build their own packages anyways. Another data point: as an OpenBSD developer, I have to *check* to figure out those things. See, 5.0 was a done deal for me in august, and there have been large advances since then. In reality, people who keep up with binary snapshots have (more or less) 5.0, as far as packages are concerned (unless they were away when we asked for package testing... but you weren't, right ? right ?) As far as amd64 goes, I expect Robert will resume building snaps as soon as he's back home. I don't know if Kiki has been chewing network cables or what.