In preparation for the upcoming release of Ubuntu 19.04, I have enabled builds of the WineHQ development and staging branch packages on the OBS.
The packages won't be distributed from the WineHQ download server until 19.04 is actually released in April, but anyone who wants to help with testing can get them directly from our OBS repository.
The OBS repository key can be downloaded from https://download.opensuse.org/repositories/Emulators:/Wine:/Debian/Ubuntu_Ne.... After adding the release key, add the OBS repository with: sudo apt-add-repository 'deb https://download.opensuse.org/repositories/Emulators:/Wine:/Debian/Ubuntu_Ne... ./'
Hopefully we'll be able to catch any problems before the official release.