I have to agree with GreatLemur about not seeing so many new power sources introduced with each new PH. They'll want to always keep things in reserve to sell to people who want to stick with the old sources: remember that Bards aren't going to be in PH1, and we've been hearing about this Swordmage class that's supposed to be an Arcane Defender but also isn't in PH1. I'd suggest it's more likely that they'll introduce one new power source with each PH, and use the rest of the space to introduce new classes and races that use the old stuff and thus integrate the whole game more tightly.
My class list prediction for PH2 would be:
Ardent (Psionic Leader)
Bard (Arcane Leader)
Druid (Divine Controller)
Psion (Psionic Controller)
Psychic Warrior (Psionic Defender- or maybe the Soulknife kills it and takes its stuff instead)
Swordmage (Arcane Defender)
Last two slots I'm less certain of this way.
??? (Martial Controller- I've seen nothing about this one so far but have no doubt they're thinking about it)
Monk as Psionic Striker maybe? If not Psionic, then it's a new power source and they're introducing two in PH2 which partly invalidates my list above.
My class list prediction for PH2 would be:
Ardent (Psionic Leader)
Bard (Arcane Leader)
Druid (Divine Controller)
Psion (Psionic Controller)
Psychic Warrior (Psionic Defender- or maybe the Soulknife kills it and takes its stuff instead)
Swordmage (Arcane Defender)
Last two slots I'm less certain of this way.
??? (Martial Controller- I've seen nothing about this one so far but have no doubt they're thinking about it)
Monk as Psionic Striker maybe? If not Psionic, then it's a new power source and they're introducing two in PH2 which partly invalidates my list above.