The person from Europe that sells what he calls "Banana" is www.ballpythons.de
I have see the ads from them for a long time on Kingsnake and they have been selling on there for several years. I remember seeing them selling what they call "Banana" for atleast a couple of years now. They also appear to do alot of African imports and try to market "New Morphs" out of what they get.
I just went to their page and it redirects to a new page called M&S Reptilien but I believe it is the same people with a makeover.
That's where I got my snakes from, the owner is a great guy, he has even written the standard german BP book. Basically he's our version of Kevin McCurley. The Banana has been around a few years, and like others said, it's a reduced pattern morph.
0.1 High Contrast - 1.0 Spider - 0.1 Cinnamon Pastel - 0.1 Lesser Platinum - 1.2 British Short Hair Cats