it was mentioned a while back the I7 920 would be discontinued. The Sandy bridge platforms will fill the 300usd and up gap. I take it the 970 might come down a bit and the high end sandy bridge models will fill its spot and other side of the 980x. So that fills every gap.
I think they might drop the I5 to under the 200usd mark.
I don't think any of the 6 core Gulftown processors will drop much until a Sandy with more than 4 cores comes out, which probably won't be until next summer.