I don't understand your question. You don't need to "add new Thunderbird 115 to repository."

All you need to do on the page you have a link to is click on "To Donate, Click Here."

Then it's just a matter of filling in the blanks.

Perhaps you could re-phrase your question.

I need add that version to: https://en.wikipedia.org/wiki/Software_repository Using apt.

Oh. Now I understand. You want to add Thunderbird 115 to the Wikipedia software page.

I think you will have to seek help on Wikipedia. This forum only deals with Thunderbird questions.

How add to repository that new Thunderbird using apt?

Oh. Now I understand. You want to add Thunderbird 115 to the Wikipedia software page. I think you will have to seek help on Wikipedia. This forum only deals with Thunderbird questions.

No you did not understand.

I take it you have never used a Linux distro before as the OP wants to know how to add Thunderbird to repository for install/updates in package manager in say Ubuntu or another distro that uses apt.

How add to repository that new Thunderbird using apt?

Based on your useragent it appears you are using Ubuntu or one of the distros based on Ubuntu. Btw that Firefox 116.0 you are using is on Beta channel so you may get nine or more updates for 116.0b# as the current Release is 115.0.x

for example https://itslinuxfoss.com/install-thunderbird-ubuntu-22-04/ https://linuxhint.com/install-thunderbird-ubuntu-22-04/

O, I C. Well, no, I have never done anything Linux at all. I have nothing against it, but I just have never felt the need. So far, my most adventurous wandering from Windows has been using iOS on my iPhones. Wild, huh?

Thank you for correcting my blunder and reducing my ignorance a bit. I'm outta here. Not my area.

thunderbird --version

Thunderbird 102.13.1

Still I don't get answer.

Piotr, you have the last version 102.13.1 available that is recommended. When a newer version appropriate for your is available you will be offered the newer version automatically.