Sebile, formally called Xbox Universal Controller according to the leak, is included in a hardware roadmap emailed internally on 5th February 2022. Sebile has a higher focus on sustainability as well as improvements in durability.
Sebile will also be available in the Xbox Design Lab, allowing buyers to customise the colours on the controller, with special and limited editions expected down the line.
I love that the controller is using aa batteries that I can charge and swap at low cost and use for other devices.