LEGO released the specs for the Powered Up BLE-based protocol (LWP):
https://lego.github.io/lego-ble-wireless-protocol-docs
Interestingly the document is also available as an open souce (MIT license) project at Github:
https://github.com/LEGO/lego-ble-wireless-protocol-docs
Is’s always a good sign when a big company like LEGO embraces open source so let’s hope for the best
Merry Christmas to all!