"Executive vice-president for programmes Tom Williams says the company has authorisation to offer the retrofit but has been "trying to see if there's enough interest".
But he says that the airframer believes it will have "enough numbers" to launch the retrofit by around March or April, and that the first aircraft could be modified by the latter half of 2014.
The change would take around three weeks and customers would probably schedule the retrofit to coincide with a C-check to minimise downtime."
Elsewhere in the article:
"He says there is a "bit of a weight penalty" from the reinforced outer section. But analysis indicates that the retrofit would provide the same aerodynamic benefits and fuel-burn reduction - around 4% on long sectors - as achieved with new-build sharklet-equipped A320s."
Could be a nice little earner for Airbus.