It appears that the name may be going back to CS, as in CircuitStudio 2.0.
I think this makes sense as it does not associate CS with CM which was free/cloud/sharing and other bad words for the CAD world.
This was found by an E14 member:
https://resources.altium.com/p/new-version-cs-20
Hopefully there will be an upgrade path for those who bought a v1.x version and didn't renew the annual maintenance. Altium will need an olive branch/sweetener to bring people back.