Mihara: "English version is currently in production"

Mihara ended a thread on Twitter about the 2020 TGM tournament with this tweet
Please correct me if i'm wrong (i had to machine translate with 2 different services and i'm still not sure) but he says that the "English version" is in production. Thoughts?

 

My guess is he just means the rules for https://www.toushinsai.com/title/tetristgm2/about/

 

The english translation is below as a followup now. so that is most likely what he was referring to.