Australian Football Coach 2019 is now coming soon on Steam! Any future development reports or announcements will take place there.
Please head over to the game's page and add it to your wish list: https://store.steampowered.com/app/1077630/Australian_Football_Coach_2019/
Once it's released, AFC2019 should automatically appear in your Steam Library if you already own the current version of Australian Football Coach (please note this has to be done through Steam, so it may not happen immediately.)