There is the more recent CogNos/NopSys [1,2] "an evolution of the SqueakNOS project" "a Smalltalk virtual machine running on bare x86 hardware", but that project has also been inactive for several years.

1. https://github.com/nopsys/CogNOS

2. https://charig.github.io/assets/papers/SCDE-DLS.pdf