Release v25.12.0 includes 5 new publications, representing 28 new ancient host-associated metagenome samples, 3 new ancient microbial genomes, and 0 new ancient environmental samples. This brings the repository to a total of 216 publications, 1,733 ancient host-associated metagenome samples, 813 ancient microbial genomes, and 803 ancient environmental samples. Furthermore, this release adds 44 new ancient host-associated metagenome libraries, 69 new ancient microbial genome libraries, and 0 new ancient environmental libraries. This brings the repository to a total of 2,980 ancient host-associated metagenome libraries, 3,621 ancient microbial genomes libraries, and 928 ancient environmental libraries. Added Ancient Metagenome: Host Associated Guinet 2025 10.1016/j.cell.2025.08.003 (added by @BenjaminGuinet) Jin 2025 10.1016/j.quascirev.2025.109604 (added by @Amend-1634) Ancient Single Genome: Host Associated Ramirez 2025 10.1038/s41559-025-02771-y (added by @YuejiaoHuang and @darioramirez092) L'hôte 2024 10.1038/s41467-024-50536-1 (added by @aidaanva) Ancient Metagenome: Environmental Changed Added two samples of Ottoni2021 with wide sample age ranges that were previously excluded (added by @alexhbnr) Removed Historic Centre of Sighişoara Founded by German craftsmen and merchants known as the Saxons of Transylvania, Sighişoara is a fine example of a small, fortified medieval town which played an important strategic and commercial role on the fringes of central Europe for several centuries.