https://bugs.winehq.org/show_bug.cgi?id=46062
--- Comment #1 from Rosanne DiMesio dimesio@earthlink.net --- We are in the process of changing WineHQ builds from a private build system to the OBS. Current packages for Cosmic are available on the OBS at https://download.opensuse.org/repositories/Emulators:/Wine:/Debian/Ubuntu_18.... Follow the instructions on https://wiki.winehq.org/Ubuntu to add the OBS repository.
FYI, this information was posted on the forum when Cosmic was released.