Minecraft world at newer version?

Me and some of my colleagues just started playing Minecraft again for fun (don't judge us) and we first played 1.8.8. Now we want to try the latest version, can I just change the version of Nitradoserver or are there any problems with the world? Will the new Villages etc be loaded into biomes where we have not been yet?

There are certain to be render errors here and there. Just delete the world and get a brand new world loaded with the latest version.

Since the world has never been generated there are also generated things which came later

Should not be a problem. Download the map but first for safety.

And with the Villages you have correctly recognized.