Dungeons & Dragons: Tomb of Annihilation - Rules of Play says:

Dare to defy death in this adventure for the world’s greatest roleplaying game! An adventure for characters of levels 1 - 11, Tomb of Annihilation provides the Dungeon Master with the core adventure needed to create an exciting and memorable play experience.

Dungeons & Dragons: Tomb of Annihilation Review:

Don't just take our word for it! Check out this review of Dungeons & Dragons: Tomb of Annihilation.