Even if Sony purchased them that is the only thing he can say. Since it’s not officially announced yet, they want to keep it a secret. But if he doesn’t say anything, everyone will assume it is true due to the banner.
I mean Sony screwed up here regardless. But it is more plausible that they make such a simple mistake to release the new banner too early than to make such a crucial mistake to include a independent studio in the banner…
I know some people argue that the reason is that Sony owns the IP, but why would they include it now, 3 years after it’s release?