FUD Zilla heard rumors from anonymous Asian sources that Intel's Ivy Bridge processors will offer even better overclocking potential than Sandy Bridge.
The new 22nm CPUs have lower TDP per clock and can do more calculations, which means you can push the clocks even higher. Ivy Bridge comes in March / April 2012 and normally it can work at the same clock as current generation Sandy Bridge parts, but with a lower wattage.
The 3.4GHz quad core with eight threads should be possible even at 77W, but our sources were not sure about the official designation used for 77W parts. They said it should look like Core i7 3000 series with a K suffix. Such parts should be selling for around $350.