The 1.21.80 update for Minecraft introduces several quality-of-life improvements, including the Flat World Presets feature, which allows players to select templates for flat world creations such as "Redstone Ready," "Snowy Kingdom," and "Water World." This feature is accessible in the Advanced tab on the Create New World screen and enhances player customization. The update also upgrades Mojang's Realms service by adding server region preference settings, enabling players to choose the geographical location of their Realm and providing information about the active server region upon logging in. Additionally, the update aligns the random offset behavior of trees, plants, and environmental blocks between Bedrock and Java editions, promoting consistency across platforms. Various fixes are included, such as resolving a bug with the "invincible pet" mob and changing the use of fireworks for Elytra to prevent unintended activations.