L = Lux 1
P = Lux 3
X = Lux V
It is more difficult to guess the power source they will use.
If what I infer from looking at the L1P and L0P, I guess Fenix will fullfill the most hidden desires of us flashaholics. So, no 123s.
On this line of tought an alkaline C cell, with the proper designed boost converter/sync rectifier coupled to a low Vf Lux 3, can drive it at 600 mA for 1 hr. This is my guess for the P series. The reflector can be made big enough to compete with the super LED throwers, like the McLux.
For the X type of lights, I am uncertain. One C cell can drive a LUX V at spec for 15 minutes. It may be possible to squeeze out 50 minutes of runtime off two C cells, but the X series could well be a rechargeable light driven off a 18650 or from other Li-ion cells.
Just my tought
Anthony