Delta SkyMiles made an announcement earlier today that awards holds were going away starting on September 9, 2013, and that the number of miles required award travel in international business class would go up for travel after June 1, 2014. Delta didn’t, however, have the updated award charts up on its website at the time of announcement.
I just went through all the regions and the changes are only for business class awards at low level. There are markets that don’t have any changes. It would have been easier had Delta just announced the changes and not tried to hide them on award charts.