OK, I went in to my local KMart and asked after an Impactor, and it turns out there's a reason why some places are getting W2 and others aren't...apparently larger stores get stock priority, so if your local is a smaller one (like mine) then they might not be getting much stock, possibly none of the new wave.
The staffer I spoke to said to check back in as they might come in later, but you know...be aware that they might not too. So if you're not close to a major/large store and you're desperate for any Wave 2 figures, then maybe see if someone here can sort you out.