A friend of mine stumbled across that link. Seems KHS isn't letting the grass grow under their feet!
The new hinge resembles something Dahon would do - parallelogram-ish or forward locking at least.
I can't quite make it out in the photos but it almost seems like they've gone with another Dahon-ish idea: a tapered, telescoping handle-bar stem.
BTW: if you like KHS folders, "Santa Fe Bikes" may be able to hook you up! "wpflem" on BikeForums represent SFBikes and their website is: http://sfbikes.com/ (I have no affiliation BTW)