Re: It isn't just a Rev E part, either. It's had substantial changes to support lower power, lower power sleep states, a new mode to allow lower power access to system memory for integrated graphics (while the processor remains asleep), etc.
Wrong. AMD isn't diverging on two different cores, Doug. They are putting these enhancements into the silicon and only enabling certain ones in Turion through one-time programmable fuses. Otherwise, Turion == Athlon 64.