Yup your Right these are the V2 of the case
and we can make them hold three Pi's with very little alteration i have a sample of the posts with 1mm removed so you use the top as the base for second Pi and so on the only limit currently is m3 Bolt lengths i only found one company able to supply long enough m3 rod to make the frame heights and nuts at both ends looks a little ruff but it does work
is it something you need Steve or just asking
3 plates 18 adjusted posts and 12 spacers 4 rods and 8nuts plus washers still isn't too bad.
they looked cool on there side too ill have to re assemble the [Pi]le ill call it and Take a Photo.
would work well for the raspberry Bramble Project where they wanted 10 or more stacked or fitted Closely together
one armed controls engineer, my grammar is bad but lets face it most keyboards don't suit a one armed man