Link to the f-droid repos for anyone who might want them :)
Regular: https://f-droid.org/packages/net.thunderbird.android/
Beta: https://f-droid.org/packages/net.thunderbird.android.beta/
Took me a moment to figure out why there are three repos, but one of them is from where they’ve updated the branding and description for K-9 mail 😅
My understanding is that k9 will be updated to thunderbird branding, and get the same minor ui updates and changes.
Personally I’m extremely happy with the styling changes and much prefer it to k9, but I could certainly understand some k9 users being unhappy at changes to an app they’re already happy with