How do I play the new snapshot on Minecraft?

Solution 1:

Snapshots are only available for the Java Edition of Minecraft.

"A Snapshot is a testing version of Minecraft, periodically released by Mojang AB. These versions of the game, with "unrefined" features, are available for players to try out. Players may provide feedback and bug-reports to Mojang before the features of the snapshot are implemented into an official update. Snapshots are available for the Java Edition version of the game."

Solution 2:

According to Minecraft.net (emphasis mine):

XBOX ONE / WINDOWS 10

You will need to own the digital version of the game. For the beta, disc owners are not supported - sorry!

Joining the Minecraft Beta on Windows 10 or Xbox One:

1. Go to the Store app on Xbox One or a Windows 10 PC.

2. Search for the Xbox Insider Hub app.

3. Download and install Xbox Insider Hub.

4. Launch the Xbox Insider Hub.

5. Navigate to Insider content > Minecraft Beta.

6. Select Join.

7. Have fun and find bugs!