The TRON Coaster in the Magic Kingdom is based on the guest-favorite attraction TRON Lightcycle Power Run at Shanghai Disneyland. This coaster-style attraction will allow riders to board a train of two-wheeled Lightcycles for a thrilling race through the digital frontier.
Here is a video from back in May of the construction as it got started:
As you can see in the photos lots of progress is being made already.
The Coaster Track is up and you can see they are starting on the main building.
You can get some of the best views of the construction on the People Mover.
The TRON attraction is set to open at the Magic Kingdom in time for Walt Disney World’s 50th anniversary in 2021.