I too am interested that course again, but while browsing the mitmath GitHub repository I noticed a Julia Computation course that appears to be about to start on 8th September 2022, if I have interpreted things correctly:
Also it may be of interest to some that doggo dot jl on YouTube is planning a series called “Julia Differential Equations for Beginners” [info viewed 6th Sept 2022] the first video due to be openly available on 18th Sept 2022.