Well, the long-awaited H501 has just been released by Zebralight.

For those unfamiliar with Zebralight, they make some very cool lights which use CREE leds (much much better than standard leds). The new H501 is basically the same as the existing H30 except it runs on a single AA battery (yay!).
Here are the specs…
Light Output: Constant ratio output level spread. Current regulated.
96 Lumens (2.3 hr) on High
18 Lumens (19 hr) on Medium
3.3 Lumens (3.5 days) on Low
LED: CREE XLamp XR-E Q5
Dimensions
Diameter 18.5 mm (3/4”)
Height 71.2 mm (2 3/4”)
Battery: One AA size alkaline, 1.5v lithium primary, NiMH rechargeable, or 3.7v 14500 Li-ion rechargeable. Reverse polarity protection.
Beam Type: 80 degree flood, with no hotspot
Not sure of the weight, but it should be similar to the H50 which weighs around 2oz including battery and headband.

