I think Whitewolf is saying that those transmissions and power steering systems that specify DexIII must be junked as soon as the current service interval for the fluid ends. See, DexIII has ceased to exist... and in Whitewolf's opinion, one should NEVER pour in any fluid that is not reccommended by the manufacturer. So if the reccommended fluid is DexIII (which no longer exists, I'm told), then you just gotta junk the car.
Unless, of course, you can drain some DexIII out of a junkyard transmission (after tracking down the previous owner and verifying under threat of bodily harm that he did in fact put ONLY DexIII in said transmission). Assuming the fluid in that particular vehicle is not at the end of its service life... you'll need that vehicle's maintenance records.
I'd suggest that savvy BITOG car owners immediately begin petitioning all the OEM's for updated specifications... so that you may continue to drive your vehicles. Else you'll have to upgrade to vehicles that specify currently licensed fluids.