Hi,
Joomla! 4 is the latest major release of Joomla! CMS and this will be Long Term Support (LTS) version. Joomla 4 brings a huge upgrade to the CMS, amazing new features, raises the minimum supported PHP version to PHP 7.2.5, as well as removes previously deprecated functionality. Joomla 4 also comes with a completely new admin interface and new front-end template.
Joomla 4 RC4 was just released on 13 July 2021, we’ve also been working to make our products compatible with them. Please check our updated product support Lifecycle and the Joomla 4 upgrade.