My Last Jedi Stormtrooper helmet (not premium) came in this week. Pretty happy with the over all quality. It's a fine display piece
I think it took about a week for them to ship it out. The international mail process took a bit longer There were no issues in shipping, though.
So the only new helmet announced around SDCC was the Vader, right? Not seeing anything else and I was at my wife's summer work retreat last weekend and unfortunately was missing a lot that was going on with SDCC.