Made several updates to the first post.
New Monorail Trains
January 2018 - Disney is meeting with companies to potential build new monorail trains in time for the 50th anniversary.
April 2018 - Disney has not confirmed new monorails are coming at this point but several sources indicate a deal is close with the possible manufacturer Bombardier who built the previous trains. Bob Gurr at an event in Orlando said Disney is indeed close to a deal and that new trains will be coming soon as the current ones are over their expected life span.
May 2018 - A deal is very much in the works with Bombardier the Canadian company who built the previous monorails. The plan is to have at least some monorails done by the 50th anniversary.
New DVC/Resort at the River Country site
March 2018 - Disney has filed exploratory permits for this location to check if the land is suitable for building. Martin at WDWMagic says a resort is in the works similar to the one long rumored for the site.
May 2018 - New permits for a site prep area linked to Project 89 (the exploratory permits) have been filed.
Whispering Canyon and other Wilderness Lodge dining changing?
May 2018 - Several sources are indicating that the antics from Whispering Canyon are no longer happening. A theme change is rumored for the dining experience and characters are rumored to be coming to the Artist Point.
Indiana Jones replacing Dinosaur/Dinoland USA?
Visionary Soul at WDWMagic is reporting that Disney Execs want Indiana Jones in the parks for the next film to come out. The simplest option is to redo Dinosaur and that area into Indiana Jones.
March 2018 - Several plans are in flux for the Dinoland area according to WDWMagic sources. A Dino themed refresh of the land is a front runner.
May 2018 - VisionarySoul on WDWMagic is reporting this is going forward and Dinosaur could close as early as next year to become Indiana Jones Adventure.
New resort coming to Epcot area?
February 2017 - WDW1974 from WDWMagic says a resort will be added near the Epcot entrance
July 2017 - Martin of WDWMagic says Disney is considering 4 possible resort options for the area
October 2017 - WDWMagic reports of new exploratory borings reveal possible large scale projects Northwest of Epcot
Jim Hill says Disney is looking at two locations for a hotel at the front of Epcot
November 2017 - Magic Feather from WDWMagic says the Epcot resort is happening but could happen in one of three locations all within the Future World area. The front of the park, and near The Land pavilion are two of the three locations.
April 2018 - Still very much a possibility for the front of the park.
May 2018 - Clearing work has begun in the area where exploratory permits were filed last year.
New Space Themed Restaurant
July 2017 - Announced at D23 this new concept will be coming to Future World. No details were given on when. Martin at WDWMagic says this will be attached to Mission: Space on the Test Track side.
January 2017 - will open in 2019 according to Martin at WDWMagic
May 2018 - Disney confirmed the location will be between Test Track and Mission: Space