Ah - I guess I mis-read the description of the changes. When I read that these features are available to subscribers, then perhaps that is technically "true" - but only through the PS "Camera Raw" filter - not in the obvious way though LR. Nowadays I spend far more of my time in LR than in PS, but I guess this might be a case when I need to use PS.
So thanks - I do not need to replace my LightRoom installation after all, and can continue upgrading as I have been doing.
Brian