As with all recent D&D books, Waterdeep: Dragon Heist (in stores this coming Friday) has a disclaimer in the front.
There’s one in the front of every book of the 5E era.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.
(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.