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 Releases iOS 10.3.2 With Multiple Bug Fixes and Security Updates
iOS 10.3.2 is a free over-the-air update available to all users with a compatible device. It can also be downloaded and installed on iOS devices using iTunes on a Mac or PC.
There were no outward-facing changes or new features discovered during the beta testing process, aside from a small fix for SiriKit car commands, which are now working as intended.
It appears iOS 10.3.2 focuses primarily on bug fixes, security enhancements, and other minor operating system improvements.
iOS 10 will soon be followed by iOS 11, which we will see introduced at Apple's June Worldwide Developers Conference in San Jose, California. We still have several months to go until iOS 11 is released to the public, so there are likely to be continued iOS 10 updates.