Hello Kitty is nearly 52 years old, and it is a mainstay of pop culture. Since its inception, it's hard to go... well, anywhere, without seeing something Hello Kitty-related. Whether it's notepads, clothes, shoes, makeup—the cute cat with a bow on her head is quite literally everywhere. She has also been adapted into multiple animated projects. Given her immense popularity, it's been odd that the franchise has yet to receive the big-screen treatment. In 2019, it was revealed a deal had been reached to put a Hello Kitty film together, but nothing had come out of that... until now, that is. 
It's time to buckle up, Hello Kitty fans, because a feature film based on the franchise has been officially announced. From co-producers Warner Bros. Pictures Animation and New Line Cinema, the film will be directed by Leo Matsuda in his first time directing a major feature. Matsuda is a veteran of the animation industry, having worked on Disney properties Big Hero 6 and Wreck-It-Ralph. As for the writing team, Dana Fox (Cruella, Wicked, Wicked: For Good) is said to have penned the latest draft of the project. 
The film comes from producer Beau Flynn, who, according to Variety, worked for a decade with Shintaro Tsuji, founder and CEO of Sanrio, to obtain the Hello Kitty rights. Variety also confirmed the film will be an English-speaking release, as opposed to English-dubbed. In a statement (via Variety), Warner Bros. said the following about the project: "The film marks Hello Kitty’s Hollywood theatrical debut as Hello Kitty and her friends embark on a cinematic adventure sure to delight audiences of all ages."
Warner Bros. made the announcement with a video on its official Instagram account. In it, a person dressed as Hello Kitty in the Warner Bros. lot, excitedly pointing at the WB water tower, adorned with a bow to celebrate the announcement. The caption read, "Hello, Hollywood! [The 'Hello Kitty' movie] is coming to theaters July 21, 2028!"
As mentioned, it's been a long-time coming for a Hello Kitty movie. The project was initially announced in 2019 by Deadline, marking the first time Sanrio had given the Hello Kitty movie rights to a Hollywood studio. At the time of the announcement, Shintaro Tsuji stated: 
"I am extremely pleased that Hello Kitty and other popular Sanrio characters will be making their Hollywood debut. Hello Kitty has long been a symbol of friendship, and we hope this film will only serve to grow that circle of friendship around the world."
Of the announcement, New Line co-Presidents and Chief Creative Officers at the time, Carolyn Blackwood and Richard Brener, stated: 
"We are thrilled to partner with Sanrio and FlynnPictureCo. on developing a film based on this treasured icon. It's a rare privilege to have the opportunity to explore the possibilities of such timeless IP. Hello Kitty and her friends have been part of our shared culture for decades, and we look forward to exploring where her newest adventure will take her."
As mentioned, Hello Kitty is a staple of pop culture. Being the first time that Hello Kitty has ever been adapted theatrically, the film has the potential to have a similar cultural impact as fellow animated feauture The Super Mario Bros. Movie from 2023, which ended up grossing $1.3 billion globally. 
The Hello Kitty movie is slated to release July 21, 2028.