JetBlue is placing an order for 40 A320NEO (new engine option) airliners and changing part of its existing A320 order to A321s.
The airline will shift 30 of the A320s to A321s out of JFK. The aircraft will come off the line with winglets. Those aircraft are to be delivered in 2013; the NEOs are to be delivered starting in 2017.
The engine selection for the NEOs has not been made. The airline plans to run a competition.
via Airbus Starts Winglet Retrofit With JetBlue | AVIATION WEEK.