Joomla 3.5 introduces 34 new features, including support for the PHP 7 scripting language, which significantly increases web site speed. This version of Joomla! supports the most recent release of PHP, the most popular programming language for developing web applications. PHP 7 was recently announced with significant performance improvements and is now available for use by the general public. With Joomla! 3.5 users can now enjoy the benefit of that performance improvement.
Joomla's new email update notification plugin periodically checks for available Joomla! updates and bug fixes, then emails administrators to notify them. Joomla 3.5's new statistics collection plugin gathers the system environment in use. The raw data collected is anonymised before transmission and access to the compiled data is publicly available here.
Highlights of Joomla 3.5 Release
Download system & environment information: It gives users the option to download system or environment information for support purposes.
Ability to add a user CSS file to Protostar: Currently it is impossible to use a custom.css file when using the Protostar template. This update adds a check to see if the file user.css exists and loads the file to allow for user customization.
Added site and admin links to module user: It adds switches to the mod_status module to show or hide links to the front-end and back-end of the site.
Article counts: A set of updates that allows the visual presentation of published, unpublished and trashed articles in the Category Manager for articles, banners, contacts and news feeds.
Random category blog and list order: This update answers a common user request to add a random ordering option for articles in the blog category and category list view.
Editor Buttons added to the Toolbar: You no longer need to scroll down the page to find the "read more" or "insert image" buttons. Editor extension buttons that used to be placed below the text area can now be found in the toolbar where they belong.
Easily Insert Modules in Articles: It allows users to easily add a module into an article with a button directly on the editor toolbar. Users don’t need to learn any syntax or remember the module details as the user interface does it for them.
Drag and Drop Images: Adding an image is now as easy as dragging and dropping it from your computer directly into the content. This works anywhere that you are using the default TinyMCE WYSIWYG editor.