In 2009 Airbus launched a new blended winglet design which the company called a "sharklet", designed to enhance the payload-range performance of the A320 Family. Sharklets are expected to result in a reduced fuel burn of up to 4 percent over longer sectors,[20] which may correspond to an annual CO2 reduction of around 700 tonnes per aircraft.[citation needed] They are also offered as a retrofit option. The A320 will be the first model fitted with sharklets, which will be delivered in 2012.