OP
I don't know why everyone is telling you not to get the Ivy Bridge, they will be cheaper and better than sandy and as one poster commented, intel has the new pci 3.0 slot, which will surely be the video card slot of preference.
The 2500K sandy bridge, is worse in every way to the ivy bridge analog the 3570K. They are probably telling you not to get something better so they can tell themselves that they still have the best.
It was smart to wait to buy Ivy Bridge, as many have commented, prices in processors just don't go down. There are still core 2 duos kicking around for $125. Just wait until they've settled down in price from initial release (a month or so). Read some reviews, and get the new ivy bridge processor you want.
There are some forums and whatnot around that talk about how the 2500k is an amazing overclocker (and it is), but I think if you wait, you'll see people do amazing things with the 3570K as well. If nothing else, you get the full benefit of USB 3.0 native, PCI Express 3.0, price, and all the other benefits of the new z77 chipset.
Don't have your bubble burst just yet.