The core of Zero-OS is 0-core, which is the Zero-OS replacement for systemd.
See the release schedule in the Zero-OS home repository.
Enteracting with zos
ZOS does not provide interactive shell, or a UI all interactions id done through any of its interfaces. For more details about interaction with zos please check the docs here
Releases and features
Check the releases for more details
In Getting Started with Core0 you find the recommended path to quickly get up and running.