It doesn't show up in the 3-plan diagrams, but the A350 does have winglets (or whatever those half turned up wing-tip fences are called)
Seems you can't share the URL for the Airbus Photo Gallery, but this should get you half way there, then you just need to select A350 in the category list to get some examples.
http://www.airbus.com/index.php?id=1921&rand=1291641582
S.