I would be slightly disappointed that they didn't make it on time. This is nothing. What is something, not a minor something either, is that this would cause the "exponential rise in difficulty" that has so many of you shitting your pants to be largely delayed by that very same period.
Why?
BECAUSE KNC PRODUCTS ARE THE PROJECTED CAUSE OF THE FIRST MAJOR JUMP IN DIFFICULTY FROM 28NM ASIC DEVICES!!!!!!
Damn, peeps! I've watched people bet MILLIONS on something far more speculative and not shit their pants every ten minutes. Grow a pair, willya?
We are already exponential, doubling the network every month, without any 28nm products being deployed. I dont expect this to suddenly stop or slow dramatically as Bitfurry, Avalon, BFL and likely asicminer are still constantly adding to the network. If anything, network growth still seems to be accelerating, and is currently approaching 3% growth per day (which equals x2.35 per month for the mathematically impaired).
That said, if after the BFL and Avalon disasters, you purchased any asic without accounting for the possibility of a few weeks delay, you deserve whats coming. A 12 month wait like BFL, thats reason to get mad, but just a few weeks is actually less than any reasonable person would have expected.