It seems Microsoft (via the Xbox​.com web­site) have removed the Neill Blomkamp announce­ment, the pre­vi­ous URL now leads to a 404 page error. There can be a num­ber of expla­na­tions for this:

The announce­ment may have been pre­ma­ture
This could sug­gest the con­tract details or some other finer points had not been con­cluded at the time of pub­li­ca­tion. This would call for a retrac­tion of the state­ment to con­form with a con­fi­den­tial­ity clause.
The arti­cle was wrong
It’s pos­si­ble that some­one could have screwed up or alter­na­tively mes­sages may have been mixed. Neill Blomkamp’s role may not be as big as direc­tor, he could just be run­ning the spe­cial effects depart­ment. But con­sid­er­ing the AICN inter­view and the words from Blomkamp’s mouth this is highly unlikely.
The site messed up
It’s just a prob­lem with the site — I like this explanation.

Well this is all just spec­u­la­tion; such activ­i­ties are con­fus­ing and in the past have pointed to PR dis­as­ters etc. My hunch is that this is noth­ing but I bring it to your atten­tion any­way just in case.