Premieres sometime in 2025. The new PV is here. Check out the ANN article for additional information. Synopsis for the first season from AniList:

A typical morning. The usual music. Their normal lives. The peace these seven girls experience will suddenly be destroyed. By the living dead… zombies. A reality that they never wanted a part of, an amazing and terrifying zombie world. They all share one wish: “We want to live.” These girls will struggle through this saga, in order to achieve a miracle. MAPPA, Avex Pictures, and Cygames team up to bring you a juicy, 100% original anime. A timeless shocker for all audiences, a brand new style of zombie anime, will soon rise.