I have a Mavic 3 and have been waiting for awhile for the compatibility update. I am waiting on this update to purchase the The FileMaker course.
seeing that the mavic3 is a new drone, I wouldn’t expect DJI to release the SDK till the end of this or early next year
Just keep an eye on the ‘What’s New’ Page:
Mavic 3 got a new firmware update today: details here:
Though this doesn’t directly address Litchi considerations, I would think many of us would be interested.