Seems there is a new version of this bird also with composite wings. Just noticed it on the F3A Lorenz site and all I can see apart from the new (higher) price is that wings look to be also composite and some minor aero mods. Well this is just a guess because the photo is very unclear but the title says Full Composite.

http://www.f3alorenz.de/home-f3a/bod...o-voll-gfk.htm
http://www.f3alorenz.de/home-f3a/win...0voll-gfk2.jpg

cheers