And of course, shortly after posting, I found the answer -
Hugo and I decided to split the two systemd and systemv projects.
So, now I can ask a few more questions:
1. Is 10.98 (11.0 RC2) a base for "rolling" updates (or should I wait for 11.0 'final')?
2. Does a "rolling" update 'respect' the current fstab? (For example, if I install NuTyX to an ext4 partition with a separate grub EFI, can I copy the contents of that ext4 partition to a BTRFS subvolume, update its fstab and use a different bootmanager from the one created by the install?)
2a. When EFI-stub was made available, most distros compiled it into their kernel, even though they continued to use a bootmanager/loader (usually GRUB). Is this the case with NuTyX?