Hi, are the dev builds for Spigot 1.16.1? Or are you going to release when ready on Bukkit?

Yes the dev builds can run on 1.16.1 and also 1.16.1 is already out for spigot/paper

https://papermc.io/downloads

Am I looking in the wrong place for dev builds? The last successful build at http://ci.onarandombox.com/view/Multiverse/job/Multiverse-Core/ is nearly a year old, so cannot be 1.16.x compliant.

lastest build is only a month old. It passed all the test and its working. The only reason its mark s as fail is bcu we are working on a new java-docs for it that is not completed yet. Its safe to use.