Sources has confirmed that Barcelona a server K10 will be
fully available from a few server manufactures at the launch day. So If
Barcelona launches in late September or early October when we expect it, you
can bet that it will be available in servers from HP and some other usual
As the marchitecture is backward compatible you can simple plug one or two new CPUs and your old Opteron server should work with a new quad core.
We hope that AMD is right for its sake as a lot of people lost the confidence in Barcelona and its time to market.