Unlikely, last year I believe they didnt say anything officially and we just kinda had to play it by ear.
That said there has been more or less a pattern, usually first is lower lot, so expect Fnaf and Jason to probably open around 5:30, Wyatt Sicks and Scarecrow might be at the same time, or they might be at 5:45 since sometimes they stagger it like that.
Second is usually H-Lot which is usually 6:30 for both, but they start letting people line up around 6. I believe sometimes Terror Tram opens at 6-6:30 as well but I'm not positive.
Last is usually Upper lot, with all of those opening around 6:45 to 7 for the general crowds.