Finally, Joomla! 4 stable release plan is scheduled. It will be going to release on 17th of August, view the announcement here. Joomla! 4 is the next Long Term Support (LTS) version. It brings huge upgrade to the CMS, new framework, numerous new features, completely new admin interface and new front-end template.
Last week, we released preview version of T4 Framework for Joomla 4, and today, we are releasing preview version of T3 Framework for Joomla 4.