AMD flagship FX 8350, the one that will replace the  current flagship in the AMD world known as FX 8150, will enter in  production in Q3 2012. We don’t know if it can make it for a launch in  the same quarter, but it looks like that is the plan. 
Currently  the new FX processor is expected as an engineering sample, and AMD tells  its partners that this is expected to happen in early Q2 2012 and by  early Q3 2012 it should get to production candidate sample stage. 
It  all goes well in Q3 2012 AMD enters production and launching this  production whenever it feels like it has enough of them. AMD FX 8350 is  based on eight Vishera 32nm cores that will support Enhanced AMD turbo  core technology, DDR3 1866 and fit the same AM3+ socket. At this time  AMD doesn’t mention any clocks.
 
It replaces FX 8150 clocked at  3.6GHz with 8 cores, 16MB cache and turbo ability to jump to 4.2GHz in  needed. This one is based on 32nm Zambezi desktop bulldozer core. AMD  FX8350 should upgrade the performance of AMD top category and Vishera  cores are promising some better performance at the same clock. 
In any case AMD top notch processor the FX 8150 is selling for a quite affordable €230.