Java Edition 23w13a or b

Additions
About every 2 minutes, a "propsal" will be created, and can be accessed and voted on by pressing "V". This will bring up a prompt to change a gamerule, in which the player voting has some options. One of these options will most likely be "Do Nothing." Whichever change was voted for the most, will change.

Potions of small/big Give the small/big size effect to entities, which controls their size

Moon dimension (The Moon)

- Moon rovers generate there

Cheese block

/transform

Bottle of mob player or mobs can morph mobs using by item.

Reference
Java_Edition_23w13a_or_b