A few of them do, non of the new builds do yet. I was told by the SCP that we will likely retrofit them at some point. There is an STC for the winglets and most of them are installed by Delta. We will likely wait until we can get them for pennies on the dollar and have them installed then, there is also a ramp space issue for us in Memphis, the winglets make the footprint quit a bit larger than the non winglet jet.

Main factor though is that we fly at night primarily so looking cool doesn't matter.