You can read more on it here:
https://lostmediawiki.com/The_Hobbit_(lost_high-frame_rate_versions_of_high_fantasy_adventure_film_trilogy_based_on_novel;_2012-2014)But I don’t see getting a legit release of this anytime soon, the best hope would be maybe a DCP rip.
DCP Rips are exceedingly rare, and they don’t happen very often, especially modern films