As you've no doubt heard, Moodle 2.5 is due for release next month, and so we're currently working on documenting all the new features and improvements in the new Moodle Docs 2.5. The wiki includes a new page, New features, which provides screenshots and a quick overview of features of interest to teachers, students and administrators, complementing the more technical Moodle 2.5 release notes.
There's also a German Moodle Docs 2.5, which Gisela is working on (many thanks).
Help with the docs is always welcome - just log in with your moodle.org username and password to edit pages. Please see the list of tracker issues labeled 'docs_required' for new features and improvements awaiting documentation.