Moodle has been upgraded to version 2.7.1 and as with any upgrade, some features and support are added while others are removed. Please take a few minutes to read the release notes on 2.7.1 found in this link.
Also, it is worth nothing that the minimum browsers supported are IE 9, Safari 6, Firefox 25, & Chrome 30. (Using IE 10 will add drag-and-drop upload of content from outside the browser into Moodle)
Finally, we successfully updated all of our mods, plugins, and other customized functionality with this update as well.