Mozilla unveils Thunderbird 115 with anticipated Supernova user interface and enhanced features

After teasing it for months, Mozilla has officially launched Thunderbird 115, featuring the much-anticipated Supernova user interface (UI). The previous UI of Thunderbird was perceived as complex and dated, prompting this substantial update. The Supernova UI introduces a 3-pane window with modernized folder, message list, and message display panes. It also incorporates an updated quick filter, calendar, and address book with a new vertical view and unified toolbar.

The Thunderbird 115 release brings a host of design improvements, including new iconography, easy density control, an intuitive app menu, new folder modes, and a visually appealing tags view among others. Notably, the Supernova update also significantly enhances keyboard navigation and screen reader accessibility throughout the application.

Mozilla has indicated that the Supernova UI is a work in progress and will continue to evolve. Over the next year, the company plans to deliver numerous enhancements to the existing Supernova features and roll out entirely new ones.