OpenBSD’s Meltdown patch has landed, in the form of a Version 11 code update that separates user memory pages from the kernel’s – pretty much the same approach as was taken in the Linux kernel.
A few days after the Meltdown/Spectre bugs emerged in January, OpenBSD’s Phillip Guenther responded to user concerns with a post saying the operating system’s developers were working out what to do.
I am sure other BSD vendors will start releasing there’s as well now that FreeBSD is the first one.