The reason they are happening is because Advanced Micro Devices has finally introduced the AM1 platform for Kabini APUs. In truth, the AM1 socket existed before, as the FS1b socket, but the Sunnyvale, California-based company decided it was time for a name change and, with it, to take on a new image. Given that AMD used AM3/AM3+ in the past, albeit for high-end instead of low-end CPU sockets, it's not that surprising to see a move like this.