Here's some info just published by TP-Link: Interested In Trying Your Kasa Devices in the Tapo App? - Smart Home Community
"What is the difference between Kasa and Tapo?
The key difference is that Tapo will cover more categories of smart home and IoT devices, such as Smart Hubs, sensors, smart thermostats, and advanced security cameras, as well as increased compatibility with third-party services and protocols such as Apple HomeKit and the Matter Protocol.
Kasa is expected to continue releasing and updating products for its four core product lines: Smart Switches, Cameras, Plugs, and Lighting; while Tapo will begin to expand into new product lines, such as sensors, door locks, vacuums, and hubs for its own low-energy protocol. "
This suggests to me that Tapo is the FUTURE but Kasa devices will hang around for awhile too.
