I can't see Intel's 8 normal cores and 8 little cores catching on as a good idea especially with AMD's 3950X, The new 5950X and by the time Intel's "16 core" part comes out AMD will have out their 6950X which will be even more monstrous than their upcoming 5950X.
For laptops this may be a good thing, Use the 8 little cores for browsing, Desktop usage and the 8 big cores kick in for rendering, Gaming etc... but for standard desktops I can't see them taking off.