I have read each one previous to posting, and no confirmation
The review that the PP quoted re: family of four and the room sleeps five, confirms it. If it sleeps five, the only way it can do this is by having a murphy bed: queen bed (2), sofa bed (1), pull down bed (1), murphy bed (1).
Where one gets into challenges determining room configuration for the cat 8 is when the room only sleeps 3 or 4 -- which bed is "missing" ? e.g. on our first 2 cruises we were in a cat 8A that sleeps 3 - queen + sofa, no pull down, no murphy. We now like the cat 8B and one has to be careful with them because some of the rooms sleep 4 because they don't have a murphy (eg 9010 and 9510 have the pull down but no murphy). The category definition says the rooms hold 3-5 so it is possible some 8B on other floors than we are considering don't have the pulldown AND the murphy and only sleep 3 (OTOH, the "3-5" might be referring to all of cat 8, as I am never 100% sure how Disney does its category definitions). HOWEVER, if a cat 8 sleeps 5 then by definition it has all of the beds as that is the only way you can total 5.
Since we like cat 8, and right now the 8B, I went through and made a list of the cat 8B rooms (and some other cat 8 as backup) and used online reviews and info from threads in sites like here to come up with which ones had murphy beds and not (that is what we care about), and where I could verified by pricing a fake cruise with 5 passengers. In addition to the list I marked them on a deck plan. Makes it much easier when planning a cruise so we know which staterooms will meet our needs.
FWIW, I did discover some interesting things, such as on the Dream/Fantasy there are 4 8B cabins on deck 9 forward (2 on each side of the ship, mirrors of each other) that NEVER seem to be available, even on opening day for silver people. For ANY sailing that I could find. Which makes me suspect that
DCL has them blocked out of inventory for some reason.
SW