It's probably because the World Aquatics Championship is held in July.
Joking apart, I have seen a tendency for studios to release everything as soon as possible. Like, August used to be considered part of the summer, but you never see big films opening there anymore. So maybe that has now affected July? Or maybe they're all just staying away from
The Lion King.On the BOM schedule, July looks incomplete. I think there will be a few moves before we get there.