There is much speculation about this blend, but from piecing together what I have seen as direct quotes from Mike and Mary, it would seem to me that when they have tinned and shipped what they have produced now, this one will be gone. Just how much that is is anyone's guess. Again, from piecing together what others report from conversations at Chicago, don't be surprised to see a 41st Anniversary, FDA permitting, at the next show. Whether any 40th anniversary is left in stock at the major etailers or not is pure conjecture.
I have six tins, enough for me. But my time horizon is, when I am having a good day, five years tops. Younger members might indeed consider stocking up.