That was way more than a month or two ago. Closer to 6.
AZDR only released some feeder cultures, and when they sold out, that was it for the time being. I don't know the current status of the project.
Yes, they do stay wingless in future generations, its a recessive trait just like we see in our FFs.
I never heard of the less smelly media being released, which may be another reason that breeder kits aren't being sold.