When EPICS modules are updated they can change the list of published PVs, and NICOS must be aware of it. In this session we discuss ways of managing this versioning across both NICOS and the EPICS layer. Some questions we may explore: - How do we coordinate upgrades between the EPICS layer and NICOS? - How do we document a given EPICS interface (i.e. the list of PVs of a given EPICS module...