Didn't see a post on this here, so I thought I would call attention to it. According to Rob Galbraith's site new Alien Bees are coming. Pre-orders start June 1st with expected shipping starting July 1st.
Couple of things really stood out for me.
"Three capacitor banks, with seamless switching between each The vast majority of monolights on the market utilize a single bank of capacitors, then achieve a multiple stop brightness range by progressively lowering the internal operating voltage as a reduced brightness setting is chosen by the user. This works fine, but at the expense of flash duration, which gets progressively longer as voltage is reduced inside the monolight. Colour temperature consistency can suffer as well. This is how most monolights work, however, and is the reason why, on most of them, turning down the output causes flash duration to increase, an increase that quickly becomes significant as the output is lowered beyond about one stop."
"Worldwide power supply and compatibility with low-cost AC inverters In preparation for the company's expansion into Europe, the new lights have been outfitted with power supplies that can draw 90-250VAC, for compatibility with wall sockets worldwide. In addition, the design of the power supply is such that it doesn't require a large surge of power during recycling. Mostly for that reason, the AB MAX 320 and AB MAX 640 will be among the few flash units that can plug into inexpensive square wave AC inverters (sometimes called modified sine wave or non-pure sine wave inverters). Traditionally, studio flashes can be powered in the field only by pure sine wave inverters, which are invariably much more expensive, and often heavier, than an equivalent square wave model."
Full article can be found here,
I couldn't find anything on the actual Alien Bees site, however.