Specifically, in this case it’s the new Minecraft 1.16.5 version for the big Nether Update. In fact, this is the first time since the Bountiful Update released in 2014 that a major update has received a fifth minor version. So, logically, this version doesn’t add any new content, but makes Minecraft more powerful. This update is only to fix two important issues that caused server crashes.
The 1.16.5 update is the fifth part of the Nether update.
