Fresh from the development pit comes a new rules concept currently scheduled to appear next year in Player's Handbook 3. Hybrid characters take elements of two classes and blend them far more thoroughly than the multiclass system. Take the hybrid characters rules for a spin and send your comments to firstname.lastname@example.org, with "Playtest: PH3" in the subject line.
Like the multiclass feats introduced in the Player's Handbook, these rules let you reflect a more varied array of character abilities than traditional classes do. Whether you’re doing this to reflect your character's elaborate backstory, to combine different mechanical elements to create a potent new combination, or to fill out a party that needs just a little something extra, the end result is the same: Your hybrid character gives up depth of ability in exchange for greater flexibility.