https://eu.usatoday.com/story/life/movies/2019/05/20/john-wick-chapter-4-keanu-reeves-fourth-movie-coming/3748121002/

https://www.polygon.com/2019/5/20/18633253/john-wick-4-release-date-announcement

https://www.etonline.com/john-wick-chapter-4-confirmed-for-may-2021-release-125609

https://www.vanityfair.com/hollywood/2019/05/john-wick-4-2021-keanu-reeves

https://www.slashfilm.com/john-wick-4-release-date/

https://collider.com/john-wick-4-release-date-update-chad-stahelski/

https://www.hollywoodreporter.com/heat-vision/chad-stahelski-john-wick-4-his-matrix-4-involvement-1296473

'John Wick, a retired hitman, lives with his dog his wife gifted him before she died. But he is forced to return to his old ways after a group of Russian gangsters steal his car and kills his dog.
In chapter 2, he makes a deal with some killers to complete a left task.
In chapter 3, Wick kills a member of the high table and is now most wanted.
He then goes on a rampage and becomes the world’s best killer.
Due to the massive success of the sequel, the fans are waiting for chapter 4
John Wick Chapter 4. Stahelski said: “John may survive all this shit, but I promise you, there’s not going to be a happy ending. Here’s a question to you: How do you f**king want me to end it?'

Can't he be like Bond?

Reeves has suddenly found himself back atop the Hollywood A-list due to his recent successes with the Wick franchise. Those successes have led to another sequel in The Matrix franchise, an appearance in Toy Story 4, and even a major role in the new Cyberpunk video game. When we spoke with Wick creator Derek Kolstad earlier this year, the writer told us he thinks Reeves has one or two more Wick films left in him.

"I think the other thing, too, is to his [Keanu Reeves'] credit and to his career, he's done very few sequels," Kolstad told us. "He found something very special in John Wick that is very important to him, that is both spoken and unspoken. I don't know how many more there will be, but I think the plan right now is, at the very least, four to five."

The writer added, "The idea being if we can... Shoehorn is the wrong word. It's very negative, but if you can look at Chapter 4 and go, 'Is it one long movie, or do you take your time, let it breathe, be its own creature as four and five?' I think that's where he would be incredibly happy. He's taken ownership of this character. He's made it his own in the best ways possible, and so it isn't a matter of deferring to a guy like Keanu. It's a matter of all of us excited to play again."

https://www.forbes.com/sites/scottmendelson/2020/08/07/shooting-multiple-sequels-for-john-wick-mission-impossible-kissing-booth-and-avatar-makes-sense-in-a-covid-era

https://www.cinemablend.com/news/2553184/why-john-wicks-director-and-keanu-reeves-arent-interested-in-filming-sequels-back-to-back

“I’m in the training paradigm. I really enjoyed the physical side of it. I’m a Virgo. I like tasks, I like puzzles, I like trying to get good at something, so it’s fun to do the physical stuff."

https://collider.com/john-wick-4-filming-start-date/

https://collider.com/john-wick-4-the-continental-tv-series-updates-derek-kolstad-interview/

https://www.indiewire.com/2021/03/john-wick-creator-not-involved-sequels-1234625400/

https://www.slashfilm.com/john-wick-4-and-5-writer/

https://collider.com/john-wick-4-filming-story-details/

https://www.filmstories.co.uk/news/john-wick-4-heading-to-france-as-filming-set-to-get-underway/

https://wegotthiscovered.com/movies/john-wick-chapter-4-hollywood-production-shoot-paris-year/

https://deadline.com/2021/06/john-wick-4-shamier-anderson-cast-1234769763/

https://deadline.com/2021/06/john-wick-chapter-4-hiroyuki-sanada-cast-1234777144/

https://www.comingsoon.net/movies/news/1180398-john-wick-chapter-4-begins-production-releases-teaser-photo

https://www.cinemablend.com/news/2569642/keanu-reeves-john-wick-4-kicked-off-production-in-on-brand-way

https://deadline.com/2021/07/john-wick-chapter-4-lance-reddick-returns-1234787130/

https://www.cinemablend.com/news/2570055/another-john-wick-star-returning-keanu-reeves-fourth-movie

https://comicbook.com/movies/news/john-wick-4-donnie-yen-sequel-more-fun-than-any-previous-hollywood-movies/