I'd like to know this too. I'm considering updating to 1.12.2 from 1.12, but I don't know if my 1.12 mods will be compatible. I know 1.9 mods could work on 1.10, but I haven't found anything about this.
I saw a mod, and I thought I downloaded it, but now I can't find it. It's a mod that adds a block that will let items update while they're in it, a health canister, and an autofeeder. I can't remember the name.