Original source in German since the other link is banned: http://www.planet3dnow.de/cms/10788-amd-verwirrt-mit-ankuendigung-von-12-kernen/
Could be related to the "Warsaw" chip I believe, that's meant to be 16 cores (8 modules) with integrated uncore, maybe do an intel and cut the core count to allow for higher clock speeds.
A socket 12 core APU based on Jaguar should be do-able.... Doubt it'd perform any better than the 5350 though, unless it runs higher clocks.
Ah, always the same sites creating a lot of fuzz for nothing ... Guys, the Kaveri APU has 4 CPU cores and 8 GPU Compute cores.