I missed these the other day but yesterday WM had a new stock of them. They had already sold one Cobra soldier and a Steel Brigade but I picked up the other SB figure, both Hazard Vipers and Stalker.
I snagged an Iron Grenadier from the find last week but passed on them yesterday. I have several of the first release and only got one of the new ones due to the paint change. I also passed on the Viper even though he has some different paint apps as well, but may snag one if I see them again. The new Cobra soldier looks pretty good but I didn't bother with him because I have quite a few of the 25th versions, plus I built a squad of the Shock Troopers so didn't feel that I needed more.
I'd like to pick up a few more Steel Brigade figures so I hope I find that wave again a couple times.