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.
macOS Catalina Now Available
Apple Seeds Mac OS X 10.6.2 Build 10C527f to Developers
Apple today gave developers the latest built of Mac OS X 10.6.2, 10C527f which contains only one known issues is said to include two sets of release notes, an indicative sign of a possible release candidate. The build is 483.5MB in size.Build 10C527f reportedly contains a number of fixes to QuickTime Player, Image Capture, iChat, and a host of other areas and includes one documented known issue related to scanning in Image Capture.
The update also appears to address an issue in which users have reported their user data disappearing due to a glitch with Guest accounts.