Mojang takes a step forward to make Minecraft Java Edition even easier to mod by committing to release the game with no obfuscation of its code. There will be a transition period for modding toolsets to prepare for the upcoming change.
https://www.minecraft.net/en-us/article/removing-obfuscation-in-java-edition
@MinecraftWikiEN Pretty W moment for Mojang to do this. While I feel for the toolsets that have adapted incredibly well to obfuscated code and now will have to adapt again, ultimately I think such moves are to the benefit of players and will help to make Minecraft live long after it finds no more support from its original developers.
It's no promised mod API but it's the right direction.
Minecraft Wiki
Frisk