Not likely,
Legacy TWC/BHN subs can keep WHDVR systems and may even switch to a Spectrum Plan. But Spectrum will not do new installs for THDVR.
The plan instead is for the DVR's to become cloud-based. Allowing all data on the servers instead of the boxes. This means that in the future, should your box die, your shows will be brought down from the server once the new box is activated. When implemented, this will mean that shows and series will last through equipment swaps until you delete them.
Satch