In a a now-deleted post, it appears that Sony has also acquired Bluepoint Games within PlayStation Studios. Having announced earlier today that Finnish developers Housemarque are joining the wider PlayStation family, PlayStation Japan put up a similar image with Bluepoint Games included before quickly deleting it.
Having started life working on Blast Factor and the PS3 God of War Collection, Bluepoint Games has gained a reputation for remakes in the last few years, developing the PS4 edition of Shadow of the Colossus, followed up by last year's PS5 launch title, Demon's Souls.
Sony May Have Accidentally Revealed Bluepoint Games Acquisition
You can find a screencap of the tweet below, where it seems like they simply used the wrong image. As always, it's worth noting this acquisition news remains officially unconfirmed, but considering the header image comes from Sony's marketing team directly, it's very unlikely this would be false.
Much like Housemarque, most of Bluepoint Games' work has been PlayStation exclusive, although much of their wider history has been focused on remastering ports. Either way, we wouldn't be surprised to see this officially revealed soon, so if/when that does happen, we'll be sure to keep you informed.