D, R, B, W, I, T, S, S, huh?
Mercule said:
My guesses:
Druid (Primal)
Barbarian (Primal)
Shaman (Primal)
Telepath (Psionic)
Wilder (Psionic)
Soulknife (Psionic)
Not bad guesses, but too many "known" classes. After the primals, which is probably correct, we're only allowed one more old class!
I suspect that 'completely new to D&D' really means 'completely new to WotC D&D'. For the psionic source, the structure of the game is so different that changing the name is enough to change the class. Make the Wilder a Witch and the Soulknife a Somatic Adept, and you're good to go.
If they do add a shadow source in this book, what might we have?
Illusionist: shadow controller (awesome fit)
Necromancer: shadow leader (you can even justify some healing)
Assassin: shadow striker (may be hard to differentiate from rogue)
Out of R,I,T,S, the letters don't match--but maybe they have other concepts in mind.