I'm not saying that they have 4 to 5 full micro-architectures shelved (that'd be insane), but from talking to Intel Oregon people they do keep a deep stock that

I'm not saying that they have 4 to 5 full micro-architectures shelved (that'd be insane), but from talking to Intel Oregon people they do keep a deep stock that will buy them a few years. Think incremental improvements like you see from Intel every year, not 20% or 30% performance improvements.