2 cores, 4 cores ? 3 cores next 6 cores
Happens, Thatz how chips works. AMD came up with a 3 core chip at a lower price than quad core.
read : http://www.informationweek.com/news/showArticle.jhtml?articleID=207000251
and Intel planning for a 6 core chip.
parallelism in OS may be a very great stuff for some time.