Future version: Betterbird 115.2.3-bb12 "Superstar" (19 September 2023)
All binaries, installers, etc. have been replaced on 20 September 2023 to mitigate a severe startup performance regression related to unified folders.
If you are in doubt which version you have, consult the Build ID in Help > Troubleshooting Information.
Note that Thunderbird 115 is still very much work-in-progress with features destined for version 115 still incomplete and
various "Supernova" bugs not fixed in the current version.
Language packs work on all three platforms.
Language pack XPIs need to be downloaded with "Save Link As..." and installed manually.
Mac builds are not notarised. Follow
to run them.
All binaries are for x64 systems. Sha256 sums available here