Launching the next generation of energy-efficient computing, AMD today announced the transition to 65nm process technology, beginning with the immediate availability of energy-efficient AMD Athlon 64 X2 dual-core desktop processors = the 5000+, 4800+, 4400+, and 4000+. All 65nm Brisbane core processors are equipped with 2x512KB of L2 cache. The move to 65nm process technology enables AMD to produce more processors on a 300mm wafer, for increased production capacity, while continuing to aggressively scale performance and reduce power consumption.

There's definitely a market for 939 processors. AMD is going to be doing a disservice to themselves by requiring people who have 939 motherboards to upgrade their equipment. Basically if you are 939 you need a motherboard, memory, and processor. If that is the case I would just go with a Core 2 at this point. By producing one more high end 939 processor AMD would be able to string along 939 users for at least another year before they will need to purchase all new equipment.