1.12 World of Color Update

1.12, the first release of the World of Color Update,^[1] is a major update to Java Edition released on June 7, 2017. This update introduced a more vibrant color palette, a new crafting system, hints for beginners, glazed terracotta, concrete, colored beds, illusioners, and parrots. It also replaced achievements with a customizable and more powerful system of advancements, and introduced a new system for working with collections of commands, called functions.

Source : Minecraft Wiki