The vmips 1.1.x releases have come and gone. More recently, I have been working in my spare time on making it possible to boot an operating system on vmips. The testing this effort has required has unearthed many interesting bugs along the way. The NetBSD "dec-docs" archive has been immeasurably helpful. (I expect to make a new major release based on this effort before the year's out.)
I haven't worked on Lisp at all lately. I've too much else to do, and I'm paid to code in C++. More's the pity; many times I've wished for mapcar or remove-if-not and had to make do by hand, using C++ iterators...clunky, but I can appreciate that they're type-safe.