FWIW, I wasn't saying it needed to age, only that an 8.5% beer could age nicely for a while. Who knows how old it is now - I'd drink it now.
Yeah, isn't that a winter release for them? I could be wrong, but if it is, that means it was probably brewed late last fall or earlier. I do love that beer though. Haven't had it in a while.
Nocturnum is year round. Delirium Noel is their Xmas seasonal. I've aged Nocturnum for about 3 years. It gets more rounded & soft, but loses some brightness. I'd suggest drinking it now.