2015 is a year in the 21st century.
A new timeline was created, and most things that they originally witnessed in 2015 never existed.
By this time in history, technology had progressed as much during the 30 years since 1985 as it had during the previous 30 years from 1955 to 1985. Electronics were in virtually everything from clothing to garbage cans to make them move, talk and/or make electronic noises.
Flying cars, once they were invented and perfected, had become so common that drivers no longer needed roads — except perhaps for short journeys. Skyways dominated the skies of central California and eventually the entire world. Cultural influences from other countries, particularly Japan, were more often seen in food and clothing.
Life was lived at a quicker pace than before, in evidence by the speed that people walked down the street, the time it took to cook dinner, and the swiftness of court trials.
Hill Valley underwent a period of gentrification, or revitalization of its downtown. With an increased concern for the environment, the Courthouse Square was landscaped with a large artificial lake (with the surrounding road having NO LANDING markings applied to dissuade drivers of flying cars from bringing their vehicles down near the lake), and businesses were brought back with the construction of an underground Courthouse Mall.
- Air traffic control
- Auto-adjusting and auto-drying jacket
- Automatic dog-walker
- Automated Texaco service station
- Barcode license plate
- Binocular card
- Bionic implants
- Computerized breastplate
- Cosmetic factory
- Dehydrated pizza
- Dust-repellent paper
- Flying circuits
- Fruit dispenser
- Holofilms like Jaws 19
- Hoverboards like the Mattel hoverboard, No Tech hoverboard, Pit Bull, the Rising Sun hoverboard, and the Question Mark hoverboard.
- Hover conversion
- Kirk Gibson Jr. Slugger 2000 adjustable bat
- Litter Bugs, robotic mobile trashcans
- Mr. Fusion
- Multi-channel video screen and the 300-plus channel universe
- Neon curbing
- Pac Fax
- Portable thumb unit
- Power-lacing shoes
- Rejuvenation clinic
- Scene screen, featuring The Scenery Channel
- Sleeping device
- Soda bottles with built-in straws
- Tablet computer
- Thumb pad
- U.S. Weather Service, controlling and scheduling weather
- Video glasses/Video telephone glasses
- Video simulacrum
- Video telephone
- Female president
- Multiple ties
- Transparent necktie
- Color-shifting lenticular baseball cap (teen fashion)
- Auto-adjusting and auto-drying jacket (teen fashion)
- Wearing pants inside-out (teen fashion)
- Privacy act
- Queen Diana
- Thumb bandit
- Vietnam becoming a favored spot for surfing vacations
- $100 is seen as spare change
- Blast from the Past
- Bottoms Up
- Cafe 80's
- Courthouse Mall
- Hill Valley International Vector Port
- Hill Valley Payroll Substation
- Hill Valley Surrogate Parenting Center
- Hydrators Unlimited
- Hyperlane Grid 4
- Pizza Hut restaurant
- Skyway C25
- Pontiac dealership
- The Ice Cream Clone
- World O' Transponders
- Timeline 1:
- Saturday, August 8: The Hill Valley 1980s Car Expo is held. Doc enters his DeLorean and wins first prize, ten percent off a hover conversion at Goldie Wilson Hover Conversion Systems. To get the money he needs for this and the Mr. Fusion, he searches the internet for the best investment to make, then travels back to April 18, 1938 to pick up several new copies of the first issue of Action Comics.
- Wednesday, October 21: Marty McFly Jr. is arrested after being set up for a robbery by Griff Tannen.
- Thursday, October 22: Marty Jr. is tried, sentenced and convicted to 15 years in the state penetentary for the robbery.
- Monday, October 26: Doc and Einstein arrive in the future (assuming they went exactly 30 years ahead from October 26, 1985).
- Wednesday, October 28: Marty's daughter Marlene attempts to break her brother out of prison. She is sentenced to 20 years in jail.
- Dates unknown
- Doc spends an unknown amount of time in 2015 and later. After picking several new copies of the first issue of Action Comics, Doc returns to an unknown time in 2015 or beyond to sell the issue. He then travels to some point in 2015 to use the discount he won to get a hover conversion by Goldie Wilson III, and has his DeLorean outfitted with a Mr Fusion. Then, he travels to another point in 2015 or beyond, to sell another of his Action Comics at Southby's Auction House for $2.5 million dollars.
- Doc travels to 2015 or beyond to undergo personal rejuvenation surgery and learn as much as he can about Marty Jr.'s meeting with Griff on October 21. Doc also places Einstein in a suspended animation kennel. Eventually, Doc leaves for 1985 to pick up Marty and Jennifer.
- Timeline 2:
- Friday, October 9: Holomax Jaws 19 debuts at the theater: "This time, it's really really personal."
- Wednesday, October 21:
- The Chicago Cubs win the World Series.
- Doc Brown, Marty McFly and Jennifer Parker arrive in 2015 to save Martin McFly, Jr. from being set up for a crime by Griff Tannen.
- Marty poses as Marty Jr. and manages to change future history for the better by causing Griff and his gang to crash into the Hill County Courthouse, resulting in their being arrested.
- 2015 Biff Tannen steals the DeLorean time machine and heads back to 1955 with the sports almanac, then returns the DeLorean without either Doc or Marty noticing.
- The 47-year-old Marty, dared by Needles, illegally lets Needles scan his card, and subsequently gets fired by Mr. Fujitsu.
- Thursday, October 22: Griff and his gang are sent to jail for wrecking the Courthouse Mall.
- Friday, October 23: Queen Diana visits Washington, D.C. according to the October 22, 2015 issue of USA Today (of course, in reality, the princess died in 1997).
- Timeline 3:
- Timeline 4:
- Friday, October 16: Statler Toyota airs a commercial featuring Jimmy Joe Statler, so the business is still operating in this timeline. However, it is unknown whether it still occupies the plot of land it did in 1985, where the Pontiac dealership operated in the second timeline, or if it had always remained in business, yet simply moved some time after 1985.
- Wednesday, October 21:
- After changing the timeline where Biff ran Hill Valley, and refusing to race Needles in 1985, the fax machine no longer prints that Marty McFly was fired from his job on this date, as Jennifer Parker witnessed the words being erased in 1985.
- One hour before his past self would arrive with Marty McFly and Jennifer Parker, Emmett Brown set up a video camera to capture video of a space time correction. He goes back in time to an unknown destination to put his plan in motion.
- Griff and his gang crash into the Courthouse Mall, and Griff Tannen tries to unsuccessfully implicate Marty McFly Jr., implying that Marty and Jennifer allowed their son to get involved with Griff, knowing that their past selves would come to the future to help him.
- Thursday, October 22: Griff and his gang are convicted and imprisoned for crashing into the Courthouse.
- Date unknown: After being accidentally sent to 1885, where he settled to raise a family, Doc managed to create a time travelling train, and went to 2015 (or beyond) to have it hover converted.
- Timeline 5:
- Wednesday, October 21: The hydrator, Nike MAG, hoverboard, and Mr. Fusion are erased from from existence, as Doc Brown traveled to an unknown point in time to prevent these inventions from being available by 2015 to prevent a nuclear holocaust in 2045.
Behind the scenes
- Wednesday, October 7: The original date that Marty, Jennifer and Doc would travel to as opposed to the 21st.
- Saturday, May 30: World premiere of Back to the Future Live in Concert in Lucerne, Switzerland.
- Thursday, June 23: Caseen Gaines' book, We Don't Need Roads: The Making of the Back to the Future Trilogy is released.
- Sunday, September 27: The video game LEGO Dimensions, which includes Christopher Lloyd and Michael J. Fox reprising their roles as Dr. Emmett Brown and Marty McFly, is released in the United States.
- Wednesday, September 30: Diamond Select releases the board game, Monopoly: Back to the Future Trilogy Edition.
- Tuesday, October 13: The 30th Anniversary Edition of Back to the Future: The Game is released for PlayStation 4, Xbox 360 and Xbox One.
- Friday, October 16: Back to the Future: The Ultimate Visual History is first published by Titan Books in the UK.
- Tuesday, October 20:
- Back to the Future: The Ultimate Visual History is first published by Harper Design in the US.
- Back to the Future: The Animated Series is released on DVD in the United States.
- "How Back To The Future 2 Should Have Started", a short parody of Back to the Future Part II, is uploaded to YouTube by How It Should Have Ended.
- Wednesday, October 21:
- Wednesday, November 11: The second issue of IDW's Back to the Future comic is released.
- Wednesday, December 9: The third issue of IDW's Back to the Future comic is released.
- Back to the Future Part II first draft screenplay
- Back to the Future (Alluded to when Doc said he'd travel to 30 years after 1985.)
- Back to the Future Part II
- Back to the Future Part II novelization
- Back to the Future Part III (Mentioned only)
- Back to the Future Part II & III
- Back to the Future: The Pinball (Date shown)
- Back to the Future: The Animated Series (Season One opening theme)
- Super Back to the Future Part II
- Back to the Future: The Card Game (Mentioned only)
- Back to the Future: The Game
- Back to the Future: The Game - Episode 1: It's About Time (Mentioned only)
- Back to the Future: The Game - Episode 2: Get Tannen! (Mentioned only)
- Back to the Future: The Game - Episode 3: Citizen Brown (Mentioned only)
- Doc Brown Saves the World
- Back to the Future: Untold Tales and Alternate Timelines
- ↑ When asking Doc why his 1931 counterpart couldn't have invented a hoverboard, Doc responds that they wouldn't be invented for another 84 years.
- In 2015, in real life, there were no widely-produced flying cars, auto-adjusting and auto-drying jackets, power-lacing shoes, etc. Nike had produced prototype power-lacing shoes, there were prototype flying cars, such as the Transition road-able aircraft by Terrafugia, and Falyon Wearable Tech created a prototype auto-drying jacket. However, none of these will be shipping commercially until 2016. Another flying car, the Terrafugia TF-X, is planned for release in 2021.
- In reality, in 2015, the basic concept of watching multiple channels at once, as exhibited by Marty Jr., technically existed. Televisions offered picture-in-picture functionality and various satellite TV packages offering overviews of certain groups of channels based on genre – like sports or family channels – which could be viewed all at once. Some smart TVs also supported simple voice commands which allow the viewer to control functions such as turning the TV on and off, changing channels, accessing apps, and navigating the internet.
- Almost all of the billboards shown around Courthouse Square are holographic billboards, which were yet to be widely adopted in reality. The technology required to produce such displays was still in its infancy in 2015.