I disagree, it's not a clear inference at all.
Not quite correct IIRC, the reasoning was that the Jube and the Standard 4 had not sold any better than if they'd just had new chassis.
As Rob says, the retooled Jube has been out at least four years, possibly more, I'm open to correction but I think these examples are the second run.
Every time something is sold cheaply, we go through this process of speculation, overanalysis and getting two and two to make five. It'll just be stock clearance to make way for newer items, it's hardly an unknown phenomenon with consumer goods.