Night mode is an automatic setting which takes advantage of the new wide-angle camera that's in the iPhone 11 and 11 Pro models. It's equipped with a larger sensor that is able to let in more light, allowing for brighter photos when the light is low.
16" MacBook Pro Now Available
Apple U.K. Get a Mac Ads
The ads include Tentacle, Office at Home, Restarting, Virus, Trust Mac, and Pie Chart. Many of them appear to be refilmed versions of the U.S. ads with the exception of Tentacle and Office at Home which appear to be U.K. specific.
Apple Japan posted Japanese versions of the ads in November.