Version 20 supports the controller, along with GuardLogix variants 1756‑L72S and 1756‑L73S. On the CompactLogix side, the 5370 L1, L2, and L3 families are supported, along with the Kinetix 350 servo drive family.
You can use RSLinx Classic to browse the network and view the controller properties, which will display the firmware revision. rslogix 5000 firmware 20.12
If you open an older v20.01–20.11 project, RSLogix will prompt to convert to 20.12 (recommended). No logic changes needed. Version 20 supports the controller, along with GuardLogix