September 1st :^)
In all seriousness though, I really hope they're serious about pulling back on spec maps. It was kinda fun at first but the more accurate they got sooner in the year, I feel like that really wore off fast and by now was just kinda straight up spoilers. I doubt it's a controversial opinion, but to me the fun of speculation season was always the wild goose chase of trying to know whats coming, rather than actually knowing, even if a few things were spot on, there was always a nice mix of the satisfaction of accurate guesses along with the genuine surprises, really felt like getting to have our cake and eat it too.
I can't really remember the last time we had a year where announcements were a true surprise as they came, but I really hope this is one.