@Wazat - All of the Variants Game Mode are listed in the Official X-Wing Squad Builder by FFG. As far as I know, they all use standard play rules. The only thing that is different are the squad building rules.
@OP - I'm not sure that FFG updates the Variants very much, though Playing Favorites would be the one most likely to be updated. But I bet posting a new topic on the FFG forums would get some attention, if not from FFG then from other players thinking about which ships or upgrades to swap out.