They're doing what Japan Studio used to do with third partys.
Yes. In fact according to Hermen Hulst they are literally the same XDEV 2nd party publishing team that was inside Japan Studio, but now they have their own office and also publish non-Japanese Asian games.
In the past XDEV teams reported to local internal gamedev teams (Liverpool Studio, Sony Santa Monica and Japan Studio) and operated separatedly from each other. Now each XDEV team has their own office and are part of a global XDEV team.
So...does this game have some kind of exclusivity?
Yes, Sony only publishes their games in a single console brand.
I hope so, I would love Sony help and support their very own JRPG series, same way Nintendo has with Xenoblade.
They dont even need to buy a studio, they can just make a deal with Square or Atlus to make brand IP with Sony actively helping development and not just money hat to be exclusive.
Sony didn't need to make their own JRPGs, they already had most JRPG makers releasing their games on PS and many of them -including some of the biggest ones- being exclusive.
From is very busy right now so don't expect another game with sony. Btw Xdev is very big and support many projects worldwide
Not too long ago Kadokawa gave Sony around 2% of the Kadokawa stocks in exchange to help them bring Kadokawa games and anime to a more global audience, because until now were too focused in Japan. So we know Kadokawa wants to work with Sony.
Some time later Sony bought 14% of From Software. So we know Sony is particularly interested in one of Kadokawa's studios: From Software.
Miyazaki said three years ago that he wants to make Bloodborne 2 for PS5. So From Software wants to work with Sony.
It is very obvious that From Software will work with Sony again. Yes, we should expect another From Software exclusive for Sony like the over dozen PS exclusives they did before and the dozens of non-From Software Kadokawa teams did before.