Premieres sometime in 2025. The new PV is here. I haven’t found an English source yet, but here is the Natalie article (edit: ANN article). Synopsis of the source manga from AniList:

Welcome to Kowloon Walled City: a dystopian townscape where the people are brimming with nostalgia, and where the past, present, and future converge. Amid the hidden emotions and extraordinary daily lives of the men and women working in its confines, a tale of romance begins to unfold for real estate agent Reiko Kujirai—one that feels as familiar as Kowloon itself…