There's a pinned thread in the forum with the name "July 2018 Gen Con New Releases (including Playtest Materials) Shipping & Convention Pick Up" that's giving updates on what's happening.
The company they're using is Amazon, so expect similar turnarounds to you normally get from Amazon (though non Prime)
|Sara Marie Customer Service & Community Manager
|Sharaya Customer Service Representative
so if its early aug and we didnt get the packages we should contact you guys about a refund yes?
I'd recommend giving things at least a few business days after the 2nd, as packages can get delayed for so many different reasons. If it hasn't shown up, we'll see what we can find about what's going on, and then go from there to figure out the best resolution.