Thunderbird 115 has been out over a week now and the lack of packaged versions, especially Flatpak, is beginning to raise eyebrows. Gotta admit, I’ve been curious at the lack of a Flatpak version since the day they announced it’s “availability”.
An article:
https://www.webpronews.com/thunderbird-leaves-linux-users-waiting-for-much-hyped-version-115/
Linux Cast episode:
I know Gentoo has it masked for testing with this note, which is probably the same reason why other distros without the same mechanism don’t have it at all:
Testing. An upgrade from 102 isn’t recommended due to downgrading most likely not being possible. Back up your profile before attempting. Fresh install should be fine. Bug #910229