At last! SpamAssassin 3.0.0 is out!
I just installed it on my Mac OS X Server box, and it went off almost without a hitch. I had to remove the hand-installed SURBL plug-in I had on the 2.64 installation, but that's it.
The new SA seems much more accurate, we'll see as my bayes databases refill how well the new bayes code works.