I can't remember if the Survival shops ever had more than one wave. I'm only wondering because every year the previous year's strains get released as plushies and there aren't any for 2020 as of now. I understand if it's just a case of the artists being stretched thin enough as it is or the person who usually makes the strain plushies not being able to do so this year for whatever reason.
I don't think the den or L'amour Parlor has ever had two waves of items.