Dragon Magazine on-line posts a play-test of the Barbarian class this month.
General stuff- Striker class (no, really?) with good healing surges (8+con) and HP (15+6/lvl). Special powers: gain HP when reducing someone to 0 HP, extra attack when yo roll a critical, LOTS of powers involving multiple attacks per round, being extremely durable, and some nature-totem stuff that's kind of neat. Frenzied Berzerker paragon path. Pretty neat class, overall, kind of a tanking striker - durable, but dangerous.