Premieres sometime in 2024. This is an anime adaptation of a visual novel game. From what I can gather there were previous OVA adaptations (mostly crowdfunded), but that this is going to be an entire series. Check out the ANN article for more information. Synopsis of the previous installment in the series from AniList:

While Rena and Maki recover from their injuries, the other SORD members jet off overseas for a school trip. Within moments of their arrival, though, the Mihama gang are pulled into a manhunt for a SORD deserter, assisted by student Sylvia and Velvet of St. Aile’s International School. Tohka’s the star of the show this time round, but she’s wrestling with her own issues - old memories of her parents, and a promise to a friend that she wasn’t able to keep…