Being the crazy early-adopter that I am, I ordered one up. Still trying to figure out what I did with my digital camera, but here's a little video:
On flashing modes, the right button gradually adjusts flash rate up or down, alternately, when held down. On steady mode, it adjusts the intensity. If you have a commute that's a mix of MUP and roads, you can set the steady-burn mode to a low intensity for the MUP section, then switch to a flashing full-power mode for the road. From my time at BikeForums, I know excessively-powerful lights aren't always welcome on the MUP, so that could come in handy.
Weight is 56 grams with a mount, which is about the same as a SuperFlash with NiMH cells. The two halves of the light are held together with three screws, so you won't get home to find only half a taillight left.
Beam pattern is similar to a SuperFlash: pretty focused. If you get one,
make sure you aim it straight & level or you're wasting a lot of its potential.
Beam intensity at the center of the beam is higher than my DiNotte 300R. MUCH higher. Once I find my stupid camera, I'll get you guys some beamshots.
Summary: it looks pretty solid, and a very good buy for what they cost ($40 with USB cable, $50 with cable and wall charger).

runtime chart on box
Beamshots
The best way to view these is to right-click the links and
open each one in a new browser tab. Then you can switch from tab to tab to compare them.
SuperFlash:
right-click and open in new tab
Hotshot:
right-click and open in new tab
DiNotte 300R:
right-click and open in new tab