https://github.com/DMDcoin/Diamond/releases/tag/3.0.0.16newest wallet release
its NOT mandatory to upgrade to 3016
everything 3013 and upwards is fine regarding combatibility
but the latest 3016 wallet is most advanced regarding wallet stability
and handling of power outages without chain corruption
Thanks for your nice update and your time which you have spent for Diamond project after its launch many months ago.