Rumors of monorail expansion have existed for years at various levels of certainty. Currently, it appears that Disney is undergoing the process of refurbishing the existing fleet.
Bombardier is the manufacturer of the current Mark VI monorails that are in use at Walt Disney World.
June 30, 2019: Twitter user @tradzak posted photos of the recently refurbishment Monorail Silver. The interior features new upholstery that highlights the name and color. The exterior features the Silver stripe with a new black delta.
June 28, 2019: WDWMagic.com user Rteetz is reporting that beginning with Monorail Silver, every Disney World monorail is undergoing a refurbishment and replacements are not expected any time soon.
December 8, 2018: The doors on one of the cabs of Monorail Yellow did not open at the Ticket and Transportation Center, Polynesian Villages Resort, and Disney’s Grand Floridian Resort and Spa. YouTube Channel Monorail Yellow posted a video (Not Safe For Work – Language).
November 22, 2018: WDWNT.com is reporting that based on the expected purchase order size and cost, it does not appear that Disney has ordered new monorails from Bombardier as an order of the expected cost has not appeared on Bombardier’s financial reporting.
November 13, 2018: WDWNT.com is reporting that a door has fallen off Monorail Lime. No injuries were reported and additional details were not revealed.
The door was reportedly damaged when a guest on an ECV hit the monorail.
May 13, 2018: On Episode 161 of the Disney Dish Podcast, Jim Hill and Len Testa discuss a recent patent filed by Disney for augmented reality. They speculated this could be used on the new monorail trains.
May 11, 2018: WDWMagic.com user Rteetz is reporting that “things are moving” on this project and “may not be as gradual as one may have thought”.
In a follow up post he did clarify that he didn’t expect all new trains to be in place by 2021.
April 28, 2018: In a discussion about the 1964-65 World’s Fair, Disney Legend Bob Gurr reported that Disney is talking with monorail manufacturer Bombardier about a new fleet of trains for Walt Disney World. BlogMickey.com posted full video of the event
April 20, 2018: WDWMagic.com user marni1971 is reporting that new trains have not been ordered.
April 16, 2018: WDWMagic.com user MansionButler84 is reporting that new trains will be at Walt Disney World by 2021.
April 16, 2018: WDWMagic.com user Rteetz is reporting that no new monorail fleet has been ordered yet.
April 16, 2018: WDWNT.com is reporting that a new fleet of Monorails has been ordered for Walt Disney World. The trains will reportedly be built by Bombardier of Canada, the same company that manufactured the current Mark VI trains. The article also speculated that the trains would likely be a version of Bombardier’s INNOVIA 300 model. This model is currently being used in Brazil and Saudi Arabia.
Part of the article also alleges that funding for the cancelled Main Street USA theater project was reallocated to the new fleet of Monorails.
January 24, 2018: WDWMagic.com user Rteetz is reporting that Disney is meeting with companies about potential monorail replacements.
January 6, 2018: @abbieprimeknits on Instagram posted a video of the door on Monorail Red open while the monorail was in operation on the Epcot loop.