That's still the seller putting incorrect info and not Amazon though. Sony has submitted that info to Amazon so it's safe to assume it's from Sony.I bought a kid pool once from Amazon before a family gathering to give the smallest kids something to play in and the dimensions on Amazons US chart showed it was 36" in diameter and even had a picture of a baby sitting in it with the mother holding the baby
When it arrived it showed up about 6" in diameter and maybe could have been used as a lego swimming pool
So forgive me if I prefer to wait for an actual official source as Amazon is not official
And you're right its not rocket science, one will be published by Sony