From looking at your pictures, structurally including tank placement, hasn't changed much.
Many of your pictures look similar to mine from March 2018
Originally Posted by Terry and Jo
For the benefit of anyone wishing to see where DRV put the holding tanks, reference these two pictures. One, taken from the front shows the "door side" of the frame with the grey and black tanks situated above each other, and the white tank behind the raised part of the frame is the fresh water tank. These photos date back to the time when I was researching for our 2010 DRV, so these were likely taken sometime between 2008 and 2010.
Some of the blue lines in the photos are part of the tank flushing system.