WordPress 4.4, named “Clifford” in honor of jazz trumpeter Clifford Brown, is now available for download from WordPress org.
Version 4.4 features responsive images so that WordPress will automatically serve the right image size for the user’s browser, device, and screen size. WordPress 4.4 users will be able to embed posts from other WordPress sites.
Version 4.4 introduces a new theme Twenty Sixteen which comes with the traditional content + sidebar blog layout, the sidebar is optional, and you can have full-width pages if you want to.
WordPress is a free and open-source content management system (CMS) based on PHP and MySQL Features include a plugin architecture and a template system. WordPress was used by more than 23.3% of the top 10 million websites as of January 2015.
More info: https://codex.wordpress.org/Version_4.4