I think learn to mod should switch to younger versions of minecraft like 1.16.1 the nether update or the 1.17 the future caves and cliffs update
I'm not sure when the server will be updated to a newer version. But right now LearnToMod works with 1.9 or 1.9.2 -- here's how create a new profile on your minecraft launcher so you can use those versions
I mean like the nether update or the caves and cliffs when it comes out
Scastle said he doesn't know when. Right now, 1.9 is the latest version practically guaranteed to work. If you like the newer textures from 1.14 (Village and Pillage) and up, click here for my texture pack that has those.
Sorry! I'm not sure when LearnToMod will have those things. But we do have a texture editor and schematics builder on the website -- building a cave seems like it would be a fun project to do. You can also share it with other LearnToMod users after you're done. Let me know if you'd like help with that.