Originally Godzilla: King of the Monsters was going to be released on the same day, June 8, 2018 as Bumblebee (2018). Now, the release date has been pushed farther for March 22, 2019 and later delayed once more to May 31, 2019, following Avengers: Endgame (2019), Aladdin (2019), Pokémon: Detective Pikachu (2019), and John Wick 3: Parabellum (2019).
Godzilla received a slight revamp with his dorsal fins changing in shape, rather than being jagged and straighter in design, the new design features more protusions, and looks more like the maple leaf design akin to earlier Godzilla incarnations, the director states that his eye color also changes when he uses his atomic breath (a bright blue hue) much like his attack.
This film is a sequel to Godzilla (2014) and will be the 33rd film in the Godzilla franchise, the third film in Legendary's MonsterVerse, and the third Godzilla film to be completely produced by a Hollywood studio.
On July 21, 2018, Dougherty revealed that Bear McCreary will compose the film's score, incorporating themes from Akira Ifukube's previous Godzilla scores. Regarding his involvement, McCreary stated, "I am thrilled to be the composer for Godzilla: King of the Monsters, and honored beyond words to have the opportunity to contribute to one of cinema's longest-running musical legacies." The first trailer featured a rearrangement of Claude Debussy's Clair de Lune by Michael Afanasyev for Imagine Music. McCreary further expanded on his plans and involvement, stating, "I've known Michael Dougherty for a long time, as we both run in the same film-nerd circles. I have always appreciated his love of film music, chatting with him for hours on end over the years about the scores we both love. I was thrilled for him when he landed the gig to direct Godzilla, because I knew what it meant to him. When he later asked me to join the project, I was overwhelmed with excitement, and awe, grateful for the chance to join him in contributing to the legacy of our favorite monster. We knew from the beginning that we wanted to incorporate classic [Akira] Ifukube themes, and yet I think fans will be excited to hear how they have evolved. There are some fun surprises in store. Fitting the material and Michael's visionary film, this score is the most massive I have ever written, and I can't wait for fans to experience it!" In November 2018, a sample of McCreary's Godzilla theme was leaked online after it was used during a panel at Tokyo Comic Con.
Release Date Change: The film's release date was initially sometime in June 2018, but was pushed back to March 22nd, 2019. It was subsequently pushed back again to May 30, 2019 to avoid competition with Disney's Captain Marvel.
This Mothra's bioluminescence-based abilities are similar to a special ability of the male MUTO, originally dubbed 'Hokmuto', in an early version of the 2014 film, Godzilla. Said ability was said to be a lightning-like "shockwave" that created aurora-like lights. Furthermore, some scenes of Mothra (MA) is similar to the description of this Mothra's bioluminescence.
The reveal image for Mothra reads "Terrasearch #63061: Yucca Province". June 30, 1961 (6-30-61) was the date the original Mothra film released. However, Yucca is a typo as it's supposed to be "Yunnan", and there is no such place as the Yucca Province.
King Ghidorah stands at 521 feet (158.8 meters) tall, making him 166 feet taller than Godzilla, who stands at 355 feet (108.2 meters). This is the largest American incarnation of the monster in history, and also the second largest incarnation of the monster ever, being 62 feet taller than the Heisei's version, which stood at 460 feet (140 meters).
As seen on Monarch Sciences website, Monarch Outpost 61-where Mothra is located, homages 1961,the year Mothra premiered. Based on the fact that the Nazca Lines are mentioned in her description, it can be assumed she has some ties to Nazca culture. Mothras connection to the Latin American continent is similar to that of her AniGoji counterpart.
In the official Monarch timeline posted on the Facebook page for, "Kong: Skull Island, the label given to Ghidorah is " Monster Zero", which was the name given to him by the Xiliens in Invasion of Astro-Monster.
The five-year period between the release date of Godzilla (2014) and this film is the second longest gap between the release of the first and second films in a new series of Godzilla films, after the five-year gap between the releases of the Return of Godzilla (1984) and Godzilla vs. Biollante (1989) to start the Heisei Series.
Gareth Edwards was originally set to return to the director's chair after taking a break from blockbusters, but he decided to take on Rogue One in that time instead, meaning that his break was delayed to the point where it encompasses the time he could have directed this.
Godzilla's appearance has slightly changed in comparison to Godzilla (2014). In the film, his dorsal spikes resemble the original look from Godzilla (1954), and his body is also bulked up and more muscular, resembling a powerlifter.
Monarch Outpost 32 where Ghidorah is contained, functions as a reference to Outpost 31 from The Thing (1982), this is backed up by its location which is in an Antarctic/Arctic region. Additionally, its a more subtle homage to 1964, the year that Ghidorah, The Three-Headed Monster was released (as 32 is half of 64).
Rodan's wingspan is 871 feet wide, nearly six times his own body height (154 feet). This is similar with Mothra, who has a height of 52 feet and a wingspan of 804 feet, which is nearly 16 times her own height.
This is the second movie in which King Ghidorah is not controlled by aliens, after San daikaijû: Chikyû saidai no kessen (1964), while the rest of the films in the Toho series made aliens from the planet "X" control him.
Mosura (1961) is thought to have popularized the notion of presenting giant monsters in Japanese movies as their own individual, identifiable characters, rather than menaces who are meant to be defeated. Tellingly, Mothra is presented as more of a hero than an evil or mindless beast. This change in characterization would carry over to other famous giant monster characters, most notably Godzilla, as they would become similar to the early Western monster movie characters made popular in the Universal horror films (Dracula, Frankenstein's monster, the Wolfman, etc.) rather than the bestial and often interchangeable, generic Western notion of giant monsters.
The trivia items below may give away important plot points.
It was hinted in Kong: Skull Island (2017)'s post-credits scene that Rodan, Mothra, and King Ghidorah may appear alongside Godzilla in this sequel, which would mark the first time they have appeared in a non-Japanese film.