connectedhomeip

I think that what you're wanting is this: https://www.connectedhomeip.com https://github.com/project-chip/connectedhomeip#connected-ho... Amazon, Apple, Google, and the Zigbee Alliance joined together to promote the formation of the Working Group. Zigbee Alliance board member companies IKEA, Legrand, NXP Semiconductors, Resideo, Samsung SmartThings, Schneider Electric, Signify (formerly Philips Lighting), Silicon Labs, Somfy, and Wulian are also on board to join the Working Group and contribute to the project.

Well to be honest, I really like the open-source approach that they have decided on for the development of the standard. You can follow the development of it's reference implementation on the Github repo of the project: https://github.com/project-chip/connectedhomeip