Well if Spring 2013 represented a 29 month delay (Monarch statement) then Spring 2015 represents a
53 month delay 
I understand that Boeing have been offering good deals with early delivery on factory built B763 aircraft to certain airlines who are going to be hit hardest by the delay in delivery of the B787. Late orders with priority delivery of the B787 from certain influential US airline(s) will further impact delivery to many smaller airlines I believe.