Well, it looks like Universal was right about the information that was "leaked" just last week. Turns out that the opening date for Diagon Alley isn't June 30th after all.
Universal made the official announcement this morning that Diagon Alley would be opening on Tuesday, July 8th.
Yes, it's a bit weird and I do question a major opening on a Tuesday, but hey, it's Universal and they can pretty much do whatever they want. That said, it is a bit later than I would've expected.
Stay tuned for more Harry Potter news as the day and week continues and be sure to check out the new teaser video from Universal below!