Suspect they have massively ramped up to produce X, but demand overmet already. I had Vodafone despetate for me to take 25 at work - 7 months from end of current 2 year contract, zero up front and at 15% less than current monthly contract rates on 6Ss. Add in sale from the 25 6s and it's about 7.5 grand saved over 2 years if I bit.
Iphone 7 next for the team - all glass phones have no place for a travelling workforce.