Check out the key visual of the live-action adaptation of manga, Mairunovich. The jdrama will air in February 2021 with 8 episodes. Source: Official Twitter (Not a confirmed reverse harem drama)
It was announced in B-Project's Thrive Live event that the anime will be getting a third season. The multimedia title will also have Switch game. Source: ANN (Not a reverse harem anime. See Levels of Reverse Harem)
Here is the promotional video of A3's winter troupe. The winter arc will start on November 23. Source: ANN (Not a reverse harem)