Most likely. If you don't see a particular model in a drop, a mold might've broken, they were all too badly flopped to sell, or it simply sold out. I'm known to revamp models, but I've only discontinued one (Rei) and even that one was replaced by the similar model, Seiryuu. Some have been in an extended state of revision for various reasons but I intend to bring those back when I am able. If it's on the Models page and there is nothing like 'DISCONTINUED' pasted across it, then it's still around!