The price of the Eizo monitor is $1504 at CDW, $1486 at PC Nation. Looks like a terrific monitor - but not inexpensive.
As far as the 8 core machine is concerned, since everyone seems to be speculating, I'll speculate a little more too. It seems possible that Apple released the 8 core machine now so that it would have it to demonstrate the new version of Final Cut - - and possibly of Logic (Amazon lists a book - Logic Pro X Power by Don Gunn and Orren Merton - for release on April 30, 2007, so there might be some cause to think that this correctly reflects the name of the update.) at NAB next week.
As Nick observes this machine is listed as a build-to-order option - not a new model. Similarly, Barefeats.com notes that this machine has the same chassis as the other models, no Blu-ray option, no support for bridging graphics cards (i.e.SLI), same limit of 26 lanes in the PCIe bus, same speed on frontside bus. Thus it seems possible (at least to me) that this machine really is a stopgap and that new models of the Mac Pro with a different physical appearance and improvements in functionality are in the not too distant future. In any case, Barefeats.com states that it has ordered this machine and will publish test results involving multi-processor aware applications as soon as it has received and tested it.