DailyTech's got a bunch of info that they've gleaned from an NDA'd roadmap that they were sent. All of the details really only make things more confusing to me, personally; rather than clear anything up.

"The first of these 45nm tri-core processors, codenamed Heka, will launch with DDR2 and DDR3 support. However, AMD guidance also details that Heka will ship with two different varieties: one with a shared L3 cache, another without. All 45nm quad-core AMD processors incorporate shared L3 cache, with the exception of the Propus family processor."