The slip stems from a manufacturing issue specific to the North American edition, with Deep Silver forced to recall all copies that have already shipped to stores. The issue is apparently a printing error that saw the game distributed without CD keys, according to Bluesnews.
This delay will "probably" push back the shooter prequel's impending release on Valve's digital distribution platform Steam, though direct confirmation has yet to arrive.
The game's European release on September 5 is not affected.
A new release date for North America is not yet available, though several online retailers have the title tentatively slated for September 15.