The following rumor comes from Jon prosser, which has not been very accurate in its predictions lately, so "we'll take it with a grain of salt." The well-known Apple news filter usually gives us one of lime, and one of sand. The fact is that the leak that you are telling us today has its logic.
Prosser says that the new home pod mini y Apple TV will incorporate the Bluetooth tracking chip U1. These devices would act as "trackers" for our devices within our home. The «Home» application could use this information for its different automatisms depending on whether it detects us at home or not.
Noted Apple rumor leaker Jon Prosser today stated that the future "HomePod mini" expected to be announced tomorrow and next year's Apple TV will act as "UWB base stations«, Which means that they will be able to accurately track your location while walking around your house with other U1 devices, such as the Apple Watch Series 6 or the current iPhone 11.
https://twitter.com/jon_prosser/status/1315446364856352768
Prosser claims that as base antennas, the HomePod mini and Apple TV will use location information for multimedia controls, brightness and volume controls, and other devices such as door locks, effectively turning Apple hardware in hardware HomeKit.
It also claims that the HomePod mini and the new Apple TV could also be used in the app. Search when you are away from home, to alert you if any of your devices has been moved within your residence.
Apple last year introduced the U1 chip on the iPhone 11 series that enables Ultra Wideband compatibility to improve spatial tracking. The distance between two devices that support Ultra Wideband can be accurately measured by calculating the time it takes for a radio wave to pass between the two devices, much more accurately than Bluetooth LE and Wi-Fi. Maybe tomorrow we'll see if he's right or not.