Here you can download the latest stable release as .tar.gz package (Unix) or .zip package (Windows). By downloading Contao, you agree to the terms of the GNU Lesser General Public License (LGPL) for using the application!
The release plan gives you an overview of current and future Contao releases.
Here is a list of all changes that have been made so far. Contao draws a distinction between major releases (e.g., from version 3 to version 4), minor releases (e.g., from version 3.4 to version 3.5), and bug fix releases (e.g., from version 3.4.4 to version 3.4.5).