-
udt_M2 (First prototype) - Project MilestoneDec 1, 2024–May 31, 2025Expired CityDoctor / CityDoctor2
-
udt_M3 (Second prototype) - Project MilestoneJun 1, 2025–Nov 30, 2025Expired CityDoctor / CityDoctor2
-
-
udt_M5 (Third prototype) - Project MilestoneJul 1, 2026–Nov 30, 2026Upcoming CityDoctor / CityDoctor2
-
udt_M6 (Final prototype & publication) - Project MilestoneDec 1, 2026–May 31, 2027Upcoming CityDoctor / CityDoctor2