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 Seeds First Beta of Upcoming macOS Catalina 10.15.2 Update
The new macOS Catalina beta can be downloaded using the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.
There's no word yet on what improvements the second update to macOS Catalina will include, but it most likely focuses on performance improvements, security updates, and fixes for bugs that weren't able to be addressed in the macOS 10.15.1 update.
When we find out what's new in the macOS Catalina 10.15.2 beta, we'll update this article.
macOS Catalina is a major update that eliminates iTunes in favor of new Music, Podcasts, and TV apps, nixes support for 32-bit apps, adds a new Find My app, brings a new Photos interface, and includes multiple privacy enhancements and other app refinements.
For full details on what's new in macOS Catalina, make sure to check out our macOS Catalina roundup.