We can check at least one prediction off the list with these shots from the Hasbro booth SDCC Preview Night showing Retro G1 Optimus Prime Walmart Exclusive set.

This first look shows a reissue complete with the trailer that has painted sides instead the class blue stripes, Diaclone roller, Bloated ION blaster, misslies on the sprue, Gas Hose accessory, and classic 1984 style back flap packaging. We have to presume there wil be stickers too. Sorry, we won't be getting the Missing Link version as many had hoped. See the images below thanks to @Protoman.

Keep checking back! Stay tuned for more coverage from SDCC 2024 Preview Night coming soon.