I had an order in for a 2017 15" MBP with 1TB drive and Apple emailed that it had been delayed from the original delivery date of July 13. Turns out the delay was to switch my order to the 2018 model, but now delivery is listed as being July 27-31. Initial orders of the 2018 have already been shipped so it seems like my order should have been moved to the head of the line given it was actually ordered before customers were allowed to place orders for the 2018. Just a little snarky because I was hoping to take my new MBP with me on vacation starting July 26.
Ouch. Though at least you are getting the latest tech and don't have to deal with returning your brand new Mac to get the latest. But I sympathize with not having it on vacation.