Hi Mike, we are supporting the latest version of desktop for utilities and telecoms, which is 10.2.1. Please see the note below from Jack Dangermond explaining things better than I can.
Please find below links which give correct picture of compatibility of Schneider Products with ESRI releases.
1. GIS - Supported Versions - 10.2.1a - 10.2.1c ArcFM Server and
Object Reader for Server.
2. Supported Versions - 10.2.1a - 10.2.1c ArcFM Desktop, Designer,
Designer Express, Network Adapter, Fiber Manager, Conduit Manager,
License Manager, and Object Reader for Desktop
3. GIS - Supported Versions - 10.2.1a - 10.2.1c Responder Client
In addition, see our FAQ and other information here: