An unconfirmed anonymous message to World of Apple and a story on Digg point towards the final builds of 10.4.8 being released to developers imminently.
Build 8L2125 (Intel) and build 8L125 (PPC) are said to be free of any significant issues. The builds which reportedly weigh in at 206MB (Intel) and 30.8MB (PPC) are said to be ready for release to developers and soon the public.
Previous reports noted many areas of improvements within the update.