"a new report now indicates that the socket will be backwards compatible with 'older' Trinity APUs, as well as the just-released Richland APUs."
This is the other way around to AM2+ which allowed you to use a newer CPU series on an older board. It is a shame that FM2 won't work for Kaveri, however by having Trinity and Richland work on a newer socket, they can offload their older inventory easier. Additionally, by not leaving the socket announcement too late, there should hopefully be an avoidance of too many FM2 boards still in the channel. AM3+ was available a good few months before FX and I doubt it did AMD any harm at the time.
Now, those two extra pins... different memory interface?
