Below are a few openly‑available research papers that discuss the technologies you mentioned (10‑bit HEVC, x265, Blu‑ray‑quality video, multi‑channel audio, etc.). All of them are freely downloadable from the authors’ sites, arXiv, or institutional repositories, so you can read them without any copyright concerns.
As of 2026, PSA releases are generally found on their official site or reputable movie archive trackers. toystory1995720p10bitbluray6chx265hevcpsa link