So, I've got a new theory about the Summer Of Stven poster/promo image. So far we've had 3 episodes, but I won't count Steven Floats on this. In Drop Beat Dad, we got Roadie Steven. Then in Mr. Greg we got Tuxedo Steven.
I think our two next will be Waiter Steven and Pizza Slicer Steven. Why? Well, here starts the theory:
I think that two of the Stevens in the image will be featured in the firstt two episodes of the week. Makes perfect sense for Waiter Steven and Pizza Slicer Steven to appear respectively in Restaurant War and Kiki's Pizza Delivery Service.
The third week's first episode is Gem Hunt. I'll go with either Damaged Steven or Snow Clothes Steven.
Does it make sense to you?
Edit (7/26)[]
Turns out I was right about Waiter Steven and Pizza Slicer Steven. So far so great, but... Bismuth is going to air at the middle of the week, not on the first two days. So there goes my theory