Epistane is definitely still around and being made. As the other members mentioned, some manufacturers are discontinuing production to reduce any FDA heat they might catch. Not to confine myself in a definitive box, but me personally, I think it's a shameful move discontinuing it and even more so if you're a big company with the finances to back any legal fees induced by someone telling you to stop selling something that's legal. As a company owner I think we should stand our ground, but every owner is driven by their own motives and is righteously entitled to do what they wish.
Either way, stock up on the epi while you can! Wouldn't be a bad idea!