At every FFL at which I worked, I tried to keep a back stash of 4473 forms, ordering an extra couple hundred every now and then whether I needed them or not, just in case we had an unusually busy Christmas or a 9/11-type sales spike.
This little back stash would occasionally be obsoleted when the Feds went to a new form, and I'd have to start squirreling them away all over again.
Maybe the BATFEIEIO should have been following my game plan, because their stash of 4473s is about out. Genius timing, that, switching forms in the middle of the most perfect storm of a gun sales season since December of 1999...
(Incidentally, though, going back to yellow paper for the form was maybe the smartest thing they've ever done. It's a lot harder to misplace a yellow form on a desk full of paperwork, while a white 4473 was easily lost among other forms, invoices, and memos...)