- All-Star Cast: The film packs a pretty big cast, with Timothée Chalamet, Oscar Isaac, Rebecca Ferguson, Zendaya, Stellan Skarsgård, Dave Bautista, Jason Momoa, Charlotte Rampling, Josh Brolin, Javier Bardem, David Dastmalchian and Chang Chen.
- Approval of God:
- Though he suggested that the book should be adapted with 3 or 4 movies or as a live-action miniseries, Kyle MacLachlan, who played Paul Atreides in the 1984 film adaptation, is looking forward to Villeneuve's take on the book and is very supportive of Timothée Chalamet's casting as Paul Atreides. He also criticised the decision to release the movie on HBO Max alongside the theatrical release, stating that it deserved to be seen on the big screen.
- Alec Newman, who played Paul in the 2000 miniseries and 2003's Children of Dune, has also shown his support for the project and the participation of Villeneuve and Chalamet.
- Awesome, Dear Boy: Hans Zimmer is a fan of the original books and had always wanted to score a film adaptation. He turned down composing for Tenet just so he could work on this film.
- Creator Backlash: Villeneuve was furious at the decision to put the film on HBO Max along with the rest of the studio's 2021 films, accusing it of destroying any possibility of the franchise continuing. Legendary Pictures executives weren't happy about this either (likewise with Godzilla vs. Kong).
- Dawson Casting: As usual, the 15-year-old Paul Atreides from the novel (at the beginning of the story) is played by someone who's over 20 with Timothée Chalamet. Funnily enough, Chalamet is actually around the same age Kyle MacLachlan and Alec Newman were at their respective times when they played the role (in the 1984 film and 2000 miniseries, respectively), but he just happens to look younger, arguably younger than both.
- Development Gag: Back when he was working on his very ambitious but ultimately doomed version of Dune in The '70s, Alejandro Jodorowsky wanted Pink Floyd for the soundtrack. The first trailer for this film uses a cover of "Eclipse" from The Dark Side of the Moon, the very album they made at the same time when he was trying to put his adaptation together.
- Fan Nickname:
- The film is jokingly referred to as "Dunc" because a fan recreation leak of the official logo - approximated in Unicode as ᑐ ᑌ ᑎ ᕮ - missed the dot and lens flare that formed the middle line of the "E", making it look like ᑐ ᑌ ᑎ ᑕ.
- Some have also jokingly read ᑐ ᑌ ᑎ ᕮ as "June".
- Release Date Change: It was originally slated for release on November 20, 2020, but Warner Bros. rescheduled it to December 18, 2020 in August 2019. The film was then pushed back to October 1, 2021 because of scheduling issues caused by the COVID-19 Pandemic. Then it was decided to release it at the same time on HBO Max (for one month). Denis Villeneuve, several actors and Legendary Pictures protested that decision. It was later pushed further to October 22 to avoid Hotel Transylvania: Transformania.
- Revival by Commercialization: The use of Pink Floyd's "Eclipse" in the trailer caused the digital demand for the song to skyrocket north of 1700% in the days that followed the trailer's release.
- What Could Have Been:
Trivia / Dune (2021)