That's a good question. I haven't seen any preorders anywhere, and HTS has a glacier pace when it comes to stocking stuff. They might have them up before Christmas.
The wave 4 comics packs are out there, as I just picked up Lady Jaye and the Cobra Troopers today at TRU, but the singles are nowhere in sight. I too dig that new Airtight and Night Viper, and I'll need like ten NVs. I've seen a preorder for the Viper Pit, so I ordered two since I love that Viper mold and the colors are great.