Update, 5/07/2024:

Last year, CD Projekt Red announced it was working on a mod editor for The Witcher 3: Wild Hunt, set to hit PC sometime this year for free. Now, we know exactly when: May 21, 2024. That means we're just a few weeks away from The Witcher 3 REDkit, "an extensive mod editor based on the game's engine," being released to players around the world. 

CD Projekt Red announced this today on X (formerly Twitter), reminding players it will be free for everyone who owns The Witcher 3 on PC. 

Mark your calendars — The Witcher 3 REDkit, an extensive mod editor based on the game’s engine, releases on May 21st, 2024! ⚙

It will be available for free for everyone who owns The Witcher 3: Wild Hunt on PC.

Wishlist on @Steam, @GOGcom or @EpicGames: