DemandBlue recently published Your Ultimate guide to Salesforce Events 2019, omitting (in the version published on Forcetalks) YeurDreamin' and in both versions missing: Cactusforce, Deccan Conf, Dreamolé, Phillyforce, Banff Dreamin', True North Dreamin' and BigSkyDreamin'.
The list is far from complete and hence the attribute "ultimate" falls a bit short in my view. This only underlines the difficulty of collecting event information on community conferences.
