A few months back we heard a few tantalizing rumors about the potential release of an X2 5000+ model CPU from AMD, for the 939-pin socket. Details were sketchy at best, though it still seems like a probability. Looking at the CPU in further details reveals that it may not be available
to the retail market at all. Because it does not appear on the AMD roadmaps, it could end up being a chip delegated to OEM vendors only, and appear only as part of prebuilt machines. This has happened in the past, with CPUs being available only to OEM partners, but eventually a faster CPU would replace it anyways. This is all just speculation, and no official comment has been made by AMD.