What Are KITS?

Kits are a new form of DLC for The Sims 4 that are separate from the other expansion, stuff, and game packs. In the livestream, SimGuruNinja described Kits as a “palate cleanser” between different packs being released. Kits are hyper focused and meant to cater to different playstyles across players, so it seems each Kit will be focused on one aspect of The Sims 4.

https://gamerant.com/the-sims-4-kits-controversy-bad-release-price-why/amp/

Pretty well summarized above.

They are a new pack type that are smaller in scope and price (~$5) in comparison to other pack types. They will be for niche content and can be CAS, BB, or gameplay focused. Currently there are four kits available (two BB, one CAS, and one gameplay), but they are supposed to come out more often than normal packs.