As a side note, there are still several classes and items missing from books such as the Heroes of : Shadows and Feywild classes ect. They are in HL but do not have program material that shows up. AKA some of the powers are listed (if you look in through the editor) but the classes are missing, racial powers are missing ect. These have not been addressed for well over a year. Mostly because of the work being done to Real Works. But the 4E files are still unfinished and I would just like to have the content before or id the DDI comes down or drops off 4E material.
As Far as I know the DDI has not had changes made to it since Aug 2012.
http://www.wizards.com/DnD/Article.aspx?x=dnd/updates
So that means after Gen-Con 2012 was the last updates made.