For forum menbers living in Japan, there will be a new episode of "Tetsudo Ookoku Monogatari (#5)", on NHK BS Premium, on Feb. 13, 9pm~10:29pm. Various topics will be covered in 90 minutes (commercial-free), but ones of particular interest personally and perhaps more on the hardcore railfan spectrum, are segments on the Alfa-x test bed trainset, nighttime track maintenance, and a visit to a turnout manufacturing facility. Might be worth a view.
https://www.nhk.or.jp/info/pr/toptalk/assets/pdf/soukyoku/2021/01/005.pdf