The Patreon member version is just an earlier version of what is released to the public. When the public version gets an update, that is what the Patreon version was... and then the Patreon version gets updated with new features. There are times some mods probably push the "reasonable" timing of releasing to the public (the TOS do not give a specific time frame), but updates usually seem to be released publicly pretty regularly. If I understand correctly, the creator recently experienced a loss of someone close, so that may have affected the schedule.
