This does sound like good news! When I lived in California and wanted to put Year-of-Manufacture plates on my 1960, not only did I have to find a set of useable 1956-1962 Black-on-Yellow tags (very popular with the Tri-5 crowd) and a vintage 1960 decal, but I wound-up having to pay a fairly stiff penalty for all the years the tag had been inactive before I could use them! But they looked really great on the truck!
Lew