Yeah, that's a real prototype.
but if your talking about the first optimus in that picture, then that toy was released. You can see the gallery here on cybertron.
As for the bottom one on that page. That isn't Optimus Primal. It's meant to actually be Optimus Prime.
Oh my, well at least we know they were seriously thinking about toys back then.
Haha yeah I know that's primal, i own him. I was just saying I thought it was interesting how they modeled Optimue Prime compared to Optimus Primal (BM), they are similar in the arms, etc, even the weapon capabilities.