The BeOS-inspired Haiku operating system has received a recent port of the Go programming language to the platform. Plus Haiku also saw app improvements and more over the month of November.
Haiku received a port of Go 1.18 to its open-source operating system. Go 1.18 trails behind Go 1.25 upstream and was released back in 2022. But this Go port to Haiku is much newer than the original Go 1.4 port for that now decade-old state. As part of bringing the newer Go over, Haiku has seen some improvements to its POSIX compliance as well as various fixes.
The difference is that Haiku is actually capable of being a daily driver OS at this point (for some people). It also installs on a fair bit of real hardware.
ReactOS is still a technology preview. It can host old software in a VM. Hardware support remains very limited.
That said, ReactOS has made a lot of interesting progress recently and getting their 0.4.15 release out after literally years of being stuck in limbo was a big step forward. They have started to talk about new APIs, new hardware support, and 64 bit. I think they got some new blood. Fingers crossed.