IKEA Launches New Smart Home Range
www.ikea.com
The launch marks a significant step in making smart home technology easier to use, more affordable, and better adapted to real-life needs in the home.

The old (but still relatively new) smart home offerings from Ikea utilized Zigbee. Think light bulbs, remotes, leak sensors, air quality, outlets with power monitoring, etc.

The new devices will soon transition to Matter (many I have tried use Thread but some might use WiFi in the future).

I have the leak and CO2/2.5um air quality matter sensors and Zigbee leak, outlets with power monitoring, lights, remotes, door open/close sensors.

I would recommend the new and old Ikea sensors. They all run with AAA batteries instead of random coin cell batteries. They seem to have almost all functionality implemented in Home Assistant.