Dan Harmon has said that the season may possibly have 14 episodes, the number that season 3 was intended to have, before it was shortened to 10 episodes. Ryan Ridley suggested in an interview that late 2019 is the earliest possible release date for the season.
On March 16, 2018, Dan Harmon confirmed that the show has not yet been renewed for a fourth season and the future of the series is up in the air.
On May 10, 2018, Dan Harmon confirmed that Rick and Morty was renewed for a total of 70 more episodes, meaning there will be a fourth season, and most likely many more afterwards.
The official adult swim Twitter account indirectly confirmed on December 31, 2018 that the season will premiere sometime in 2019. It was later confirmed at the WarnerMedia upfront that the season will premiere in November of that year.
On July 19, 2019, at San Diego Comic-Con, Roiland revealed that the team had already begun work on season five. Roiland and Harmon also revealed that there might be a time-travel storyline, as well as the return of Mr. Meeseeks.
On September 21, 2019, Jeff Loveness revealed he wrote 5 episodes (4x1, 4x6, 4x7, 4x8, 5x1) on twitter.  Ryan Elder responding to say "Those episodes are all really really good". Erica Hayes, a storyboard artist who worked on many episodes, responded saying "Jeff!! You rock! You will be missed!!!", suggesting that these are the only episodes that Jeff will be writing for.On September 23, 2019, Mike Mendel (producer) passed away due to natural causes.
- “My friend, partner, and line producer Mike Mendel passed away. I am devastated. My heart breaks for his family. I don’t know what I’m going to do without you by my side Mike. I’m destroyed.”
- —Justin Roiland on Twitter
- Rick Sanchez (Justin Roiland) A genius scientist and alcoholic whose inventions and experiments serve as the basis for the episodes.
- Morty Smith (Justin Roiland) Rick's impressionable grandson who is often dragged along on his grandfather's escapades.
- Jerry Smith (Chris Parnell) Morty's insecure father, whose disapproval of Rick's influence on Morty only deepens his marital troubles with Beth.
- Summer Smith (Spencer Grammer) Morty's angst-ridden older sister who occasionally joins Rick on his adventures.
- Beth Smith (Sarah Chalke) Morty's holier-than-thou mother, a cardiac surgeon for horses.
Characters of the Day
These are the characters present in one episode within the fourth season
- Erica Hayes
- Michael Waldron
- Bryan Newton
|1||32||"Edge of Tomorty: Rick Die Rickpeat"||November 10, 2019||2.33|
|Morty goes nuts this time dawg. Rick does stuff. Season 4 premiere broh.|
|2||33||"The Old Man and the Seat"||November 17, 2019||1.67|
|We all have one thing in common broh. I don’t know broh. Watch this one.|
|3||34||"One Crew Over the Crewcoo's Morty"||November 24, 2019||1.61|
|Lots of twists and turns this time Broh. Wear your helmets.|
|4||35||"Claw and Hoarder: Special Ricktim's Morty"||December 8, 2019||1.63|
|Morty gets a dragon in this one broh. It’s a wild ride broh.|
|5||36||"Rattlestar Ricklactica"||December 15, 2019||To Be Ricktermined|
|Lots of things in space broh. Snakes and sharp stuff. Watch this broh.|
|6||37||To Be Ricknounced||2020||To Be Ricktermined|
|7||38||To Be Ricknounced||2020||To Be Ricktermined|
|8||39||To Be Ricknounced||2020||To Be Ricktermined|
|9||40||To Be Ricknounced||2020||To Be Ricktermined|
|10||41||To Be Ricknounced||2020||To Be Ricktermined|