I doubt this very much.I wonder if Neumann has plans to develop an 810 and 870 with DSP.
They have 7.1 bass management and flat FR "as is".
Integrated DSP is more useful in smaller home studios that usually don't need such expensive monsters (or hi-fi).
So, 750DSP definitely have its market share (bedroom production with 2.1) and bigger guys (almost) do not.
I think, pedantic german engineers from Neumann have feedback from customers and calculated all pro and contra a lot of times.
PS DSP essentially is a kludge that helps to those who don't have professionally built studio.