docs/en/28-releases/index.md
import Release from "/src/components/Release";
The TDengine version number consists of four digits separated by dots, defined as follows:
[Major+].[Major].[Feature].[Maintenance]Major+: Significant restructuring of the product, direct upgrade is not possible, contact TDengine customer support team if upgrade is neededMajor: Major new features, does not support rolling upgrades, and is not reversible after upgrade, e.g., cannot revert back after upgrading from 3.2.3.0 to 3.3.0.0Feature: New features, does not support rolling upgrades, but can revert back after upgrading from the same Major Release to a different Feature Release, e.g., can revert back to 3.3.0.0 after upgrading to 3.3.1.0. Client drivers (libtaos.so) and servers need to be upgraded simultaneously.Maintenance: No new features, only bug fixes, supports rolling upgrades, and is reversible after upgradeDownload links for TDengine 3.x version installation packages are as follows: