Tails 5.14 Release details:
https://tails.net/news/version_5.14/
Link to mailing list discussing the new domain change:
https://lists.autistici.org/message/20230613.145203.0cd9e48b.en.html
Last year we acquired the “tails.net” domain and, since then, we started
taking incremental steps to implement it throughout the Tails OS and
infra[1][2].
Tails 5.14 (just released a few moments ago) is the first release to
use the new “tails.net” domain in its internals (except for the
included doc which is a copy of the current website).