http://www.schlumpf.ch/hp/schlumpf/antriebe_engl.htm
Advanced Belt Drive System ABDS: A new belt drive concept opens interesting perspectives for future applications with the following features:
- no pretensioning required
- any belt line easy adjustable
- any belt width possible
- designed for standard Gates carbon belts with 14mm pitch (industrial standard)
- wide range of available belts from 994 to 4410mm length!
ABDS documentation (pdf):
http://www.schlumpf.ch/hp/schlumpf/bilder/ABDS.1.engl.pdf
A related discussion on bikeforums.net:
http://www.bikeforums.net/showthread.php?677980-Schlumpf-s-Advanced-Belt-Drive-System-(ABDS)
Photos taken at Eurobike 2010: