I can't comment on the CF-18, but I know, for instance, that in the last major briefing I was involved in, when we were talking about the helicopters, both versions.... As I said, in parallel with us doing the competitions, our armed forces knew exactly when they were coming in, and were planning in parallel to make sure that there was enough training and infrastructure time available for the training.
On October 7th, 2010. See this statement in context.