- One important change with Joomla 3.3 is the fact that it requires PHP 5.3.10 as a minimum.
This means you should make sure you have set your website to run PHP 5.3 fastcgi or higher. (This is done in our hosting control panel. A setting per website)
- Microdata - which will allows you to add contextual information to anything on your website using a clean standard.
This in turn will make it easier for search engines to understand your website. For example adding an author name to an article.
- 3rd party storage API. You will be able to store certain files such as Videos or Pictures on a service such as DropBox or Amazon S3.
- Ability to have users edit modules in the frontend if you gave them permission.
What's new in Joomla 3.3 - An infographic by the team at JoomlArt.com