Ubuntu 19.04, code-named Disco Dingo, was released on April 18, 2019.
In an interview with eWeek, Mark Shuttleworth highlighted the use of snap packages (snaps) and the Gnome 3.32 Desktop. You can watch the interview here.
You can also read the release notes for more detail. ISOs are available at download.ubuntu.com. If you’re looking for help installing or upgrading, check out the calendar for the next Installfest in your area.