This "option" that Airbus is now offering is driven by a freight operator (who has ordered a large number of A380's) putting pressure on Airbus to move the flight deck bulkhead further forward to allow more containers to be carried on the main deck. As everything on an Airbus aircraft is a structural component, the moving of this bulkhead lead to a considerable amount of structural re-design. This new bulkhead position gives the worlds largest airplane the smallest cockpit and a number of carriers that ordered A380's for passenger services would not accept this small cokpit because of security concerns as detailed previously in this thread. Airbus, agaist their wishes, now have to offer the option to its customers which obviously increases the design and certification costs.