Kirk here with an update on the castle:
Kumamoto Castle unveiled to the media https://www3.nhk.or.jp/nhkworld/en/news/20200914_35/
“All renovation work for the main tower and a smaller tower is scheduled to be completed by next March. The site will then open to the general public.”
For video and photos try: https://www3.nhk.or.jp/news/html/20200914/k10012617831000.html
Both are from NHK. I have no idea why the English item from NHK doesn’t have images.