First discovered by videotechuk_ on Twitter, it seems that the Minecraft PS5 Version has kind of made its way to the public, but you have to look for it in the game to access the PS5 preview.
If you currently own the PS4 version of Minecraft, you can now play the PS5 version with new settings and improvements to better your enjoyment of the game.
I was unable to get the PS5 version on my system, but to check if you have it on your system, load up the game, go to Settings and scroll to the bottom and look for Preview. If you are in the lucky few, you will see Get Preview for PlayStation 5.
This could be a gradual roll out, or perhaps entirely based on luck. Whatever the situation, the people who do have the PS5 version and still play the game frequently are really lucky today!