Their previous game, Divinity Original Sin 2, had a re-release called the Definitive Edition that was free to owners of the original launch.
They also, near the end of the game's life, officially included a selection of community mods as optional content.
Is a great game, not as good as BG3, but absolutely worth a look to see what they've done before. The DE re-release also has people's hopes up for BG3 getting the same treatment.