Yeah, that line is as close to confirmation that it's a Sony funded game as we're going to get.
Also, just a reminder to everyone that Jason Schreier has heavily hinted at this being a Demon's Souls Remake. In a thread asking if people think we'll ever get a DS remake he said yes https://www.resetera.com/threads/think-we’ll-ever-get-a-demon-souls-remaster.101879/#post-18285508
And in a thread with a poll asking what people think Bluepoint's next game is he voted DS remake (you can click the options in the poll to see who voted for it) https://www.resetera.com/threads/bluepoint-games-next-game-is-being-developed-for-the-playstation-5-and-is-a-big-one.145720/
Definitely gonna be a game we should see quite a bit of in a few months time at the reveal event, and hopefully it's a launch game.