The TiDB community is highly active. The engineers have been keeping optimizing features and fixing bugs. Therefore, the TiDB version is updated quite fast. If you want to keep informed of the latest version, see TiDB Release Timeline.
It is recommeneded to deploy TiDB using TiUP or using TiDB Operator. TiDB has a unified management of the version number. You can view the version number using one of the following methods:
select tidb_version()tidb-server -V