I'm afraid that this wave will not hit the midwest.
Just drive north a few hours - it's been appearing pretty regularily at Target here in MN.
Granted, the 501st Clones are the first to go, but the Astromech and Holo-Jedi have been spotted around town a number of times and the Wookiee is getting more common. I think by the time Christmas rolls around, these will start appearing in greater numbers.
There are three different case assortments shipping right now for Wave 6 of Collection 2, and the 501st Clone trooper is at 2x per case in each of the 3 case packs.