Many customers who ordered an iPhone on June 15th received an email overnight stating that it would arrive on the 23rd, not the 24th as originally promised.

There’s a grammatical error in the 2nd paragraph which reads, “…you can check the FedEx website the morning of the June 23rd,” followed by a link. It’s probably an honest mistake, but that’s unlike Apple. I’d check http://store.apple.com instead of the link in the message, just to be safe.