There are also some cases where Core i7 is purchased by the owner.MacBookModels also need to wait until June 6. These conditions are similar in the UK's official website.
On the other hand, only the 13-inch MacBook Pro with the 2.3GHz Core i5 processor will ship on June 4. Other MacBooks, MacBook Air, and MacBook Pro models ship normally.
These phenomena seem to imply that Apple's inventory adjustment before the new product launch, Apple is likely to be released at the WWDC 2018 conference to be held on June 4th, a series of new notebook products. There have been rumors that Apple will launch laptops equipped with Intel's Coffee Lake processor at WWDC. However, the Cannon Lake processor that professionals most want to see can support native 32GB memory may not wait until the second half of the year or the first half of next year.