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
Next Apple iMacs with "Striking New Industrial Design"?
The new designs are said to be sleeker and slimmer than the current iMac designs, however, the new looks may only be deployed on the 20" and 24" models, leaving the 17" model's future uncertain.
The rumor site has no solid timeframe for the release of the new iMacs, but our Buyer's Guide suggests the iMac is overdue for an update, with the last update being delivered in September 2006.
This would represent the 4th major iMac design revision since its introduction. (Original, iMac G4, Current)