It’s been a while, but Visopsys has had a new release, 0.92, with all the details in the changelog. There is a longer-term project to bring the operating system into the modern era, with things like 64-bit support, UEFI booting, and so on. In the meantime, this maintenance release features stability and usability improvements, bug fixes, and multitasker portability changes designed to further unshackle it from the x86 processor architecture.
Visopsys has been in development since 1997, and one of its unique features is a focus on a partitioning tool built atop Visopsys, Partition Logic, to make partitioning changes without booting into any other operating system.