As far as I know the 50 Purchase Rights that remain from the initial order (apart from the 11 JQ B788's) are yet to get a position on the production line so I'm not expecting any more in service with any part of the group until 2018.
As recently as the 767 farewell bash on 6 December AJ mentioned that we retain 'flexibility' on these and have the ability to get them with 18 months or so lead time. Certainly 2017 is still the 'planned' data that keeps getting thrown around.