K2 is a global mod that introduces new energy sources, buildings, ores, technologies, turrets, coverings, fuels, ways of producing science, and a major re-balance of many vanilla features.
Why is the Korean translation missing in this version?
same problem with czech version
I recently synced K2's locale with Crowdin, but apparently Linver had included several languages in the game that weren't on the site. So they got overwritten / deleted. I will fix it for the next version.
When will be available this release?
German is also missing. You can fix this in the meantime by manually downloading version 1.1.1 from https://mods.factorio.com/mod/Krastorio2/downloads and selecting the active version 1.1.1 in Factorio in the Mods section.