Version 9.0 has just been released. This new major release contains the current protocol proposal, Florence, as well as the new protocol environment (V2) that is needed by Florence. It also adds the configuration for Florencenet, a test network that runs Florence.
Compared to its release candidate (9.0~rc2), version 9.0 also contains a fix to the mempool that could crash with an assertion failure, and the Docker image tags have been fixed.
Full changelog and update instructions are available in the version 9 release page: Version 9.0 — Tezos (master branch, 2021/04/22 03:19) documentation
The Git tag for this release is
v9.0 and the corresponding commit hash is
latest-release now points to this new tag.