Delays, delays, sigh. Infinite Crisis had delays but it was only weeks. But you know what the delays of Infinite Crisis didn't seem to be worth it at all. They had too many fill in artists, and the whole feel of the book lost it's quality by issue 4. Issue's 1 to 3 were great, 4-7 where "Okay". Don't get me wrong, I totally digged Infinite Crisis.
Well, according to Marvel, the cause of the delay's were as follows: “Over the next few weeks, the Civil War proper title and a few of the tie in books that are closely related to the story in the main book will be shipping later than originally planned. More of this here.