They made the same comment in their webinars a month or so ago.
It is probably their polite way of telling everyone that they are supporting too many different MV platforms, and that they will need to rationalise that lineup at some stage. But they don't want to scare the horses in the meantime.
Of course, moving users to a different platform may not be easy when it comes down to it. The demise of mvBASE has been on the cards ever since Pick Systems took over the GA databases, and yet it is still here 20+ years later. And moving mvBASE users to D3 is probably the easiest step in rationalisation.
OpenQM has similarities to both of the U2 products - but I'm not sure that QM users would want to go (back) there. I suspect Rocket would need to put a lot of QM features into U2 before users would be enticed to leave.
My 2 cents worth.
Brian