From what I can tell, no further patches beyond 1.3 have been released to the public yet. There was tell of a new patch being released on 02/05/2018 but no news since then, so I assume that they might have hit a snag and held off from releasing it. https://twitter.com/GamesOutBreak seems to be the place to go to for the most current news it seems, but even then there's been no news since 02/05/2018.