They also said there were "Fiscal Reasons" (likely a renegotiation of pricing with Intel) for the delay. NO ONE has bothered to drill-down into THAT statement. Why?
Go back and read the next paragraph in the article. The fiscal reasons have absolutely nothing to do with Apples money ( or Intel ) .
Customers of big ticket items do fiscal planning . Folks who are going to write major purchase orders in the second half of this year need to know now. Apple hope some of them by iMac Pro but some are simply going to buy something else . Apple benefits by not pissing them off so that next time they have money they might buy. If Apple makes their job super hard they won’t.