They probably did. I can’t recall exactly how long though. There wasn’t any blacking out catalog and cardback images like they did for Jabba and the Ewoks in 1983, so he probably wasn’t in the first ESB wave. I would think Yoda made his plastic debut in time for Christmas.

Flash forward to 2017, where even if I stayed off the forum and cut my internet, I still would see Porgs plastered on the doors of my local Target. I’m staying the hell away from the toy aisle until I see TLJ. :p