New for 2013, the Luxos headlights have a new optical system, IQ2, which provides an even wider beam than the IQ system, and it's brighter too, at 70 lux. The Luxos B is the "economy" version.
Luxos B Features:
70 Lux (brightness of the beam at a standard distance)
Licht 24 - Daytime Running Lights
Automatic Sensor Switching
Cable Conduit for mount
Torx T20 fixing bolt for mount (includes T20 wrench)
The soon-to-arrive Luxos U incorporates a handlebar mounted switch incorporating a USB outlet for charging USB devices. It also has a cache battery for those devices that might switch off if the dynamo's voltage drops, like when standing at a stop light.