I think that was a problem a year or so ago, as the demand for them went over the top and they probably were forced to use extremely young tobacco to meet the demand. I smoked a few singles this winter that were younger than this box and they were fine, back to their best. My experience with a lot of the stronger Habanos in general is they are pretty good fresh, then after a few months need a year to mellow out a bit. All this by way of saying I don't really know. Personally I would start smoking them now myself, they smell really nice, no ammonia traces, etc. I keep all my boxes at closer to 60% humidity, they seem to age nicely that way, and then I move a few to the top shelf of my humidor for a few days to bring them up to 70% before I smoke them.

They're in ziplock bags at the moment, they shouldn't budge for a while.