Hello!

Having some questions about Pegasos II myself too, I don't think Pegasos III will be G3 / G4 combatible at all, just like Pegasos II won't be G5 combatible either.

You see G3 / G4 are on the same generation while G5 (PPC 970) is totally different technology. So IMO there will be: Pegasos II for G3 / G4 and Pegasos III for G5.

I am going for a Pegasos II with the coolest CPU available as soon as possible