IIRC there's already a "cheap" 6-core from Intel - the i7-970, which goes for a whopping $150 off from the 980X. Yessir, you only pay $850 for a locked multi version of the 980X. Everybody should get two at that price!
Techpowerup had an article on Bulldozer at http://www.techpowerup.com/129392/AMD_Details_Bulldozer_Processor_Architecture.html, and it looks like BD will be pretty impressive. But the article also says it'll definitely be on a new socket too, so present AM3 board owners will have to shell out for a new board, just like those Intel Sandy Bridge upgraders will
.