Nothing here WRT: Arduino and Silicon Labs team up to make the Matter protocol accessible to all | Arduino Blog ?
"Matter" - right up there with "Wiring" and "Processing" WRT internet searchability 
SiLabs hardware is pretty exciting, IMO.
Just got Silabs xG24 Dev Kit and starting tinkering.
There is Arduino core for Silabs MCU's. It only works on IDE 2.0 btw.