I have ordered one of the new 36mm filter wheels (To temporarily use with my ASI2600MC, which performs surprisingly well with NB filters, before buying a 2600MM when I can afford to do that)
The specifications list 1.5 to 3mm filter thickness however I have access to some Astronomik filters which are mounted in unthreaded 36mm X 3.5mm cells. The dimensions of the new 7 X 36mm wheel appear to be very similar to the 7 X 2" wheel, which can accept mounted filters so long as the threads are less than 2.7mm and the filter cell is less than 7.5mm deep.
Aside from possibly needing longer mounting screws, will it be possible to mount filters that are in a cell which has outside dimensions of 36mm diameter and 3.5mm thick? The only issue I could see would be if the cells would foul on the filter wheel cover and prevent the wheel from rotating.