...August. Well, they'll probably start popping up early at certain locations in July, since that pretty much happens every year. But you won't necessarily be able to find them reliably until August, and May or June are probably too much to hope for. Popping up early as in like Bionicle 2015 appearing in December? Or as in G1 popping up in the middle of Summer? More like the former. Very few street dates for Lego are absolute, and there will almost always be a few retailers who release the sets early. But predicting exactly WHICH retailers will do so is pretty difficult. Based on my experiences I expect that Toys R Us, if they don't release the sets early, should have them out promptly on August 1. They tend to be fairly reliable that way. Other than that, anything goes. Often it's just a matter of how much stock the retailers have left from the winter wave—a store that has sold through a large amount of a certain theme is more likely to put the new stuff out early, whereas a store that is overstocked with that theme might not put out the new sets until there's room on the shelves. And that can vary even within the same retail chain depending on location. Welp, guess I'm not getting anything over the Summer. You know that LEGO has an online shop, right? You buy them right there, right on time, and they ship to you ASAP. Plus, if you sign up for the VIP program, you get one point for every dollar you spend; then, you can redeem every 100 points for a $5 gift card. I'm planning on buying all of my summer sets online, so I get about 90 points. You can get VIP points in store too.