Except the Foom wave already had space accounted for it at retail since Marvel Legends were still being stocked at that time. There will have to be a whole new facing added into the old plan-o-grams for Galactus. It could happen but expensive stuff like that usually get held back until closer to the holiday buying season.
Not at the places where I found the Foom wave. They made room for them, and shortly thereafter, the 2 packs appeared.