.@TheRock to play Hawaiian king in epic from Robert Zemeckis https://t.co/d5tdm4svKl pic.twitter.com/b6KqAQKAKT— Hollywood Reporter (@THR) August 29, 2018
While we all know that The Rock puts a lot of effort and time into his movies, one where he has such a strong connection to the source material means there's going to be extra passion and effort here.
Johnson, who is of Polynesian decent, has been hoping to make a movie about Kamehameha for the better of the past two decades.
And the companies involved seem to have zero problem footing the bill - We know Warner Bros loves throwing vast amounts of money at people, directors, and characters who have proven themselves before, and while the time for epics may or may not have passed (When was the last one? That people saw?), the time of Johnson, Zemeckis, and amazing effects and CGI focused on a part of history most people do not know, have not.
Unfortunately, Deadline reports that the film should start shooting in 2020. That's a long time to wait, but The Rock is a very busy dude, so it's understandable.
source: THR/Deadline