This week, we begin the serious work on Thunderbird 114. There's a lot to plan, define, and schedule for a year that will bring drastic UI and UX changes.

A lot of the changes may upset some users and amaze others.

Every step of the way, we want to be transparent.

You'll see early mock-ups. You'll hear about plans and proposed solutions throughout the development process.

We'll be writing plenty of documentation and support articles to help users w/ the transition...