They should be released in the next month or so. To give you an idea, August starts off closing at 10pm but each week the parks close earlier. After Labor Day weekend, September brings 6pm closings.
I've been looking for August hours and noticed that they've recently changed the July hours to close the parks at 10:00p9:00p. The only date they're staying open until 10:00p is July 4.
Aug/Sept park hours should be up in the next few weeks. I'd expect August to follow a trend similar to June, and Sept will drop to 9-6 after Labor Day weekend.