Asymptote Journal online (about literary translations)
They have an email newsletter.
Using a filter I found some Japanese related pieces
They have a free email newsletter.
There is also very good https://www.wordswithoutborders.org/
– you can search by language
I just found
which looks cool.
Also https://www.worldliteraturetoday.org/ is good to have on one’s radar.
And a list of journals publishing literature in translation, great world!