The TRON roller coaster meets a major milestone: the first steel supports have been put in! The Disney Blog article contains a great video touring the build site: https://thedisneyblog.com/2019/05/17/video-the-tron-coaster-reaches-a-major-milestone-at-magic-kingdom/ .
I’m really excited for the TRON coaster to open – it’s a huge update to Tomorrowland and another fun roller coaster for WDW!