http://www.oxm.co.uk/41304/features/halo-4s-ancient-enemy-prometheans-rogue-ais-the-didact/
Nothing new.
A good read nonetheless.
I have my doubts that these forerunner prometheans are loyal to the didact or the didact him self. I speculate that these prometheans are rogue or that they are part of the master builders forces.