In Apple’s press release, they have described it as, “Everyday sounds can be distracting, discomforting, or overwhelming, and in support of neurodiversity, Apple is introducing new background sounds to help minimize distractions and help users focus, stay calm, or rest.”
They add, “Balanced, bright, or dark noise, as well as ocean, rain, or stream sounds continuously play in the background to mask unwanted environmental or external noise, and the sounds mix into or duck under other audio and system sounds.” If this sounds familiar, it is because Apple actually included it with the HomePod back in 2019, but now it will be available to more users.
While it seems to be a feature designed with accessibility in mind, we suppose that it is entirely possible that anyone could take advantage of it. So if you have problems sleeping or just want something soothing, then these sounds might be worth taking a look at when they launch.