Short answer: no.
Long answer: Intel is still officially saying that IB-e will be on the same socket. Given its scheduled release, the IB-e processors will be competing with Haswell. Haswell is supposed to be the mainstream option, and far more resources are going towards it. All of this leads to the conclusion that IB-e will not get a new PCH.
This said, remember what was promised internally of X79 (you can dig up the slides from this website). There were supposed to be more SATA ports (Intel officially only supported 6), more USB 3.0 ports, and that SATA was supposedly focused more on III than II. Some boards even opened up the locked off SATA, but they were murderously expensive.
I'd be happy with X79, assuming it was that. If they could drop down to the 45 or 32 nm process, decrease the heat output, and actually deliver on that I'd be happy. As it stands, the 65 nm process is just incapable of delivering the performance needed.
All of this hinges on Intel giving a damn about the high end processors. They've shown time and again that it isn't their priority. With AMD functionally out of the market, we may never see another value driven high end processor. I hope this is incorrect, but X79 is likely the end of the line for IB-e.