Not sure if this helps anyone or not but I have the March issue of the G.I. Joe Collectors Club magazine and that lists the wave 2 - 4 figures but doesn't say how many figures or what fillers will be in each wave.
Wave 2: Firefly (looks uber cool), Flint and Snake Eyes.
Wave 3: Alley Viper, Dragon Ninja, Joe Colton, Cyber Ninja, Lady Jaye
Wave 4: Blind Master, Kim Arashikage (both look very nice).
What I'd like to know is the case breakdown on wave 4. For me it would be perfect if wave 4 had all of waves 2 and 3 but I doubt that will happen.