An interesting article on the blended winglet:
http://www.boeing.com/commercial/aer...y.html#wingtip
I wonder what the Airbus/JetBlue team will come up with, since the blended winglet technology is patented.
The only way any design will make it onto a 'bus is with direct involvement by Airbus, since they will have to modify the flight control logic software, not because their affraid of "losing out".