XTool appears to have jumped the gun on their marketing/ release a little.
Yes, we were already in contact with them, and according to them, they have a new GRBL compatible firmware version for the machine that should make it work with LightBurn.
We do not know the timing of when they will release this - whether that is now, soon, or later.
And since this is new and has not been tested internally by us, we are not able to comment or confirm anything about compatibility at this time.
We would recommend sending any of your immediate questions, concerns, or comments directly to the manufacturer.