Sounds like their target customers are commercial service providers and industrial device manufacturers using NixOS, but need to support stable deployments for longer than NixOS's current 6 month release cycle. Probably not to applicable for individual desktop users, but they still plan on hosting a public channel and cache for newer releases.

• https://discourse.nixos.org/t/ctrl-os-open-beta-nixos-lts-with-5-year-support/68754/8