I don't reckon it is. The 2017 timeframe for their arrival has existed for the last 2-3 years. There's multiple reports going back eons to that fact. It's always been an 18 month to two year lead time on when we needed to finalise the orders. Two years brings them to now.
I reckon they'll be announced as part of the half yearly results. Look what geniuses we are and now we can reinvest and re-equip lingual with fuel efficient, etc, etc, etc.