[Batfish]

I read a response from an FMA poster on a message board about a month ago that said something to the effect of 3s and 4s packs of the "Scorpion" type coming 2-3 months after the initial 2s release. These should, of course, be announced with their respective new chargers. Another thing to watch for is the "BalancePro" line at FMA. They are marketing them as the aircraft equivalent of the Scorpion. It looks like the only difference is that the BalancePro packs depend on the ESC for cutoff voltage where the Scorpion packs have the circuitry within the pack and a lead to the ESC.
The BalancePro pack description reads "The ESC must have corresponding cutoff voltage.", while the Scorpion pack decription reads "These LiPo packs drive both brushed and brushless motors, and work with any electronic speed control (ESC) that stops the motor on loss of signal. Built-in low voltage cutoff (LVC) prevents cell damage by disabling the signal between the receiver and ESC when a pack drops below 5.8 volts. Multiple restarts enable a driver to bring a car back to the pits when pack voltage gets low."

Hope that helps.