Good question! I think the reason why this hasn't been announced and publicised yet is because it's not yet supported.
We will support the upgrade of the CS200/CS400 (but not the CS210) to these new controllers in the future, although i'm not 100% certain what the time frame is for that.
Sorry I can't give any more detailed information at this time. The great thing is we WILL support the upgrades of these systems and it will be data-in-place, which is the important point.