Oh I know it will take time for the 939 socket to phase out, but it was a surprise to everyone that AMD would make NEW processors available for 939, not just the ones they've already been producing.
AMD will stop support for 939 in a year and a half and 754 will stay around about 3-4 years for the Sempron support. The 5000+ and FX-62 will NOT come out on 939, it was just a typo on AMDs part on their site.