Thanks to FlanK3r's friendly site we can read now about:
Vishera prices (in Czech Republic), specifications and Turbo Core 3.0 feature

AMD FX-8350 (Piledriver) details

I like the last sentence: "We will say more in a few days in the review."

Doing some math, Vishera prices in the USA should go like this:
FX-8350: $235, FX-8320: $186, FX-6300: $150, FX-4300: $122.