If you remember where you saw the term (YouTube, Discord, a server ad), that context might help identify if it’s a real update, a hoax, or a private server build.

As of this writing, the following server types work best with the "hot" client:

In the in-game video settings, drop your render distance down to 4 or 6 chunks. This dramatically lowers memory usage on low-end Chromebooks.

Here is why this specific fork is causing a wildfire of hype.

If your browser stutters, running it with a clean profile or clearing cache can free up vital memory overhead. The Legal Landscape of Browser Minecraft

Extract the contents and double-click the .html file to run the full game locally without an internet connection. Multiplayer and Server Connectivity