Today, I think. The Wave 1 trailer said Wave 2 is coming early August; if it is fireworks (which is basically confirmed at this point), they'll probably go for the same routine of having a fireworks show every Sunday like in NL. In that case, I think the trailer will drop today to give people 6 days to watch it and get hyped for it. If they release it any later this week, the hype train is cut short, they risk people missing the trailer if they're off the Internet for a few days, and especially if it's any later in August we miss at least one fireworks show from one Sunday being gone already.