Based on my dealings with Intel, they are delaying because there is more profit in waiting and selling current architecture since AMD is so far behind.
Sounds about right. We're way ahead of our competition, so let's sit on our ass while they catch up...
The underlying interests of shareholders work far too often in inverse proportion to those of consumers. The great irony of course being that aside from significant overlap between these two frequently warring factions, each is dependent upon the continued well-being of the other to survive and ultimately thrive.