It appears that not only Zack Snyder is getting replaced on a certain superhero movie these days (the latest news was that Avengers' (2012) Joss Whedon was taking over for Snyder due to a family tragedy). According to Consequence of Sound, Danny Elfman (The Nightmare Before Christmas (1993), Meet the Robinsons (2007)) is replacing Junkie XL (Deadpool (2016), Divergent (2014)) as the composer for the new Justice League (2017) film.
Hans Zimmer would have been a great, familiar choice instead, as he composed the recent Batman v Superman: Dawn of Justice (2016), along with Junkie XL as a matter of fact, but he spoke out about a year ago that he is done scoring superhero films, due to maybe... comic book fatigue? He did after all compose the entire Dark Knight Christopher Nolan trilogy (2005-2012), The Amazing Spider-Man 2 (2014), and Man of Steel (2013). Nolan's Dunkirk (2017) is his next project we can enjoy this summer on July 21, 2017.
Danny Elfman's latest score was for The Circle (2017), starring Emma Watson and Tom Hanks. Known mostly for his zany, other worldly music that he often does for Tim Burton's films, Elfman is no stranger to the superhero universe. His previous comic book works include Hellboy II: The Golden Army (2008), Hulk (2003), and the Men in Black (1997-2012) series, but he is perhaps most known in this arena for composing the iconic musical score to Burton's Batman (1989) and Batman Returns (1992), and Sam Raimi's Spider-Man (2002) and Spider-Man 2 (2004). Elfman also worked with director Joss Whedon before on Avengers: Age of Ultron (2015).
Junkie XL was quoted as being disappointed with the replacement process, but graciously understands. A specific reason was not given as to why the composer was replaced. There sure are a lot of last minute changes being made to this film; hopefully it will still surpass, if not meet, our expectations after the critically acclaimed Wonder Woman (2017) from the DC Expanded Universe.
Justice League is currently being helmed by Joss Whedon and will star Ben Affleck, Gal Gadot, Henry Cavill, Robin Wright, Amber Heard, Amy Adams, Jason Momoa, Ezra Miller, Connie Nielsen, Diane Lane, Jesse Eisenberg, Jeremy Irons, Billy Crudup, Kiersey Clemmons, Willem Dafoe, and J.K. Simmons. It flies into theaters this fall on November 17, 2017.