Microsoft / Asobo have now released MSFS Update 7 or the “Game of the Year Edition”. In conjunction with the release ProSim have also released a fully compatible MSFS A320 flight model aircraft (CFM and IAE). According to ProSim developer Andras Kozma, this release should takes the product officially out of preview.
To download the new flight model use the Update menu in Prosim-Systems. Ensure you also have MSFS connector installed and ProSimA32 1.53b1 or later.