While I'd like it, I get the feeling this is more of an "oops we added something that wasn't supposed to be there" than an "oops we leaked information" - especially since the Royal Edition of Final Fantasy XV is also coming to PC.
It happened before when Gamespot (not Gamestop - a little juxtaposition there) had Dark Souls 3 footage running on the Switch. It was quickly put to the PS4 since that was actually the source running it.