Why so few new releases these days?

Notice there haven’t been many special new tequila releases these days. Only ones I know of off top of my head are G4 7Year, Volans 7 Year, Siete Leguas Blanco 47, Viva Mexico Tahona, El Cristiano 8 year, Viva Mexico 12 Year, and a couple of single barrel picks like a Cascahuin PX Cask Reposado and Los Abuelos amor y perros that command significant markups on secondary market.