Believe no cuts are been made for LAX so another leased Airbus is arriving. Best chance is one Airbus will arrive on time for EWR launch and the second arrival will enter service in 2017 as whatever way you look at it they need to lease another Airbus for 2017 so leasing it for LAX saves the same expense in 2017.
17% capacity increase cannot be achieved by waiting for Airbus to arrive.