Thunderbird 115 goes Supernova with brand new UI
It’s finally here. Mozilla has unveiled Thunderbird 115.0, a major new release of its open-source, cross-platform email client. The first major release since Thunderbird 102 debuted in late June 2022, Thunderbird 115 is dominated by one major new feature: A brand new user interface named Supernova.
The new Supernova user interface sees Thunderbird move away from its traditional two-pane layout with the option of a three-paned 'Vertical' layout, with the contents of the currently selected email displayed in a separate right-hand pane rather than below the message list.