Miyazaki said he didn't see the point of a Bloodborne remaster or remake now, that made more sense to wait another generation, as happened with Demon's Souls. So pretty likely may be coming (plus the PC port) on the PS6 release window (so maybe late 2027/early 2028).
Regarding adaptations, when Sony got a portion of FromSoft mentioned that their collaborations would go beyond games (movies, anime...), something mentioned in the Kadokawa shares acquisitions by Sony. Pretty likely out of different adaptations of FromSoft stuff that are coming Bloodborne may be one of them.
Regarding the sequel, FromSoft works in multiple games. Considering their partership with Sony, pretty likely are working on it.