Code snippets seem to reference the feature

Building things inMinecrafttakes a long time.

Even in the vastly quicker Creative mode, you’re limited to constructing your grand designs block-by-block.

As spotted byEurogamer, the footage was sharedon Twitterby user ‘Roger Badgerman’:

Don’t worry creators!

A picture of the Sniffer in the new Cherry Blossom biome in Minecraft.

For what it’s worth, the world editor footage looks fairly simplistic.