N903JB
JetBlue Airways has received the first of 30 Airbus A321s they have on order.
flightaware.com/live/flight/N903 … /EDHI/CYYR
flightaware.com/live/flight/N903 … /KPWM/KJFK
That looks good. Still getting used to the fact that Airbus aircraft are getting winglets.
Sharklets 
Leased? Looks like it’s got a German registration.
Gary
Temporary, for pre-delivery test flights and such.