So lets see what we have confirmed and rumor-wise as to the class make-up of the PHB3:
Monk: Psionic Striker. Playtested in Dragon
Psion: Psionic Controller. Previewed in the DDI
Seeker: Primal Controller. Previewed in the DDI
Battlemind: Mentioned in the Wilder text
Empath: Psionic Leader? Mentioned in passing by a developer awhile back
Templar: Divine X? Mentioned as a divine class in the Eberron Campaign Guide. Could be the old name for the Avenger.