Before last spring's COVID-19 shutdown one of the big refurbishment projects rumored for 2020 was a refresh of Big Thunder Mountain at the Magic Kingdom. Back in February it was confirmed that this attraction would be closing for a short refurbishment from May 4 to May 21, 2020 in anticipation of a longer refurbishment later in the year.
Of course, that small refurbishment never happened, and rumors of the larger refresh for this attraction faded away as Disney began tightening their belt when it came to future projects. However, last week, Disney filed two permits for updates to be made to the popular ride that mentioned labor, material and/or electrical for construction to be done at some future date.
Of course, this description is pretty vague and could just be referring to some basic updates done to keep this attraction in good working order, but many are hoping that this attraction will get some of the enhancements that other versions of this attraction have, including an upgraded finale sequence, possibly similar to the one that came to Disneyland's version of this ride back in 2014 (which you can watch down below).
Either way, right now there are no official refurbishment closure dates on the official Walt Disney World calendar, but the filing of this permit is certainly an interesting development and we'll keep an eye out in case anything materializes in the next few weeks.