Future plans have changed a little. As soon as DRevitalize 4.0 final version is released, which is planned for mid July 2019, I will start working on possible ways to implement a language pack for DRevitalize.
I plan to support the following languages : korean, portuguese, spanish, french, german, italian, russian and polish. I do hope those languages will be available under DRevitalize Windows and UEFI before January the 1st 2020.