This presentation was given at the Australian Moodle Moot 2013 to outline just some of the great features introduced in Moodle 2.5. The session was also delivered with live hands on demonstrations which can't be replicated on Slideshare.
This session was built using the great work by Gavin Henrick in his presentation titled "Moodle 2.5 some of the improvements since moodle 2.4". I would recommend checking this out as it contains an even greater feature list. http://www.slideshare.net/ghenrick/moodle-25-some-of-the-improvements-since-moodle-24