Yes. They have 1st party and 3rd party games covered.I believe XDev does a good amount of work on third party SIE published games. Their recent work anxiously being Rise of the Ronin. But they work on Stellar Blade, and probably Until Dawn remake.
And XDev is a Sony studio, I don't know if they have a physical work place or if they're a team that works across other studios though.
By big studios, if you mean Bend, Sucker Punch, or Bluepoint, you might be correct.
I don't expect Santamonica, Insomniac, Guerilla, or Naughty Dog to release a game this year at all, because they just released a game, and Naughty Dog just cancelled factions.
What I mean is a game from the actual PS studios