Lupine has updated their batteries with new Smart Core batteries that are fully sealed. The new tech pulls power evenly from each cell for overall longer life. The new casing is waterproof and has a built in audible and visual meters for remaining battery life. It also has a setting to flash the lights, letting you use the battery as a tail light.
The Betty and Wilma both get three beam pattern options that use a combination of various Cree LED bulbs and lenses to offer either 16°, 22° or 26°. The wider angles actually have a higher lumen count because they use more of the larger LED bulbs.
For dedicated commuters that don’t want a standalone battery, they offer the Piko and Betty as flashlight style options that mount to the handlebar.