I'm still not convinced that you won't be able eventually to run the Yorkfield on some 680i motherboard(s).
I've been running the Striker Extreme, which has been shrouded in controversy and ambivalent consumer-reviews at reseller sites. I haven't had trouble with it.
I switched from E6600 to Q6600 in late July, early August. By that time, BIOS revisions appeared for the board which cited among the "fixes and improvements" the better ability to overclock newer CPUs.
The ASUS website shows the board as certified for the Wolfdale 45nm Penryn. The box in the Yorkfield column is blank. It was either Anandtech or THG which posted a recent review offering a summary of Penryn compatibility for various motherboards, including the 680i's and other "last-year" Intel chipsets. They asserted that the Striker would be compatible through a BIOS fix with Penryn 45nm in general, without offering any distinction on the Wolfdale vs Yorkfield issue.
The only thing to do is wait and see. And since ASUS and others DID tout "45nm compatibility," I'd certainly support some "class-action" or other organized response. I can see no logical reason why a "double-Wolfdale" processor would not be accommodated to these boards if they were made to work just fine with the Kentsfield quads.