The Vishera processor is slated to run on 22nm architecture as does the Ivy Bridge, but the Ivy Bridge series will launch slightly before AMD's new Piledriver cores - likely in Q2 2012. We'll see if Intel's speed damages the success of Vishera. Ivy Bridge will not compete in the hexa- and quad- market heavily until Q4 2012, so Vishera and Volan may have a slight headstart.
We expect Volan will make use of AMD's 990FX northbridge as do the current Bulldozer CPUs.
AMD excels in the sub-$200 market, but Bulldozer was an attempt at a landgrab for Intel's dominated $200+ enthusiast market. We'll keep you updated on how things play out between the two goliaths over the next year.
Next to Hitachi's new 4TB HDD, next year should yield some fantastic advances in hardware!