Chivas, they could show a video showing off the new AI routines, sound updates, radio commands and ground physics couldn't they?
The graphics rewrite is badly needed everyone can agree, i also want to know what the FM guy, the DM guy, the sound guy, and the new AI guy have been doing for the last 5 months.
Why doesn't Luthier show us?
I have no doubt the FM, AI, Sound Updates, Radio Commands, etc are a time critical WIP. My best guess is that those features are still a WIP that will be incorporated into the game engine after the Graphic/Performance patch is stable. The guy doing the far less critical ground vehicle work is probably under no time pressure, and was able to show his work on an older version of the game engine. We can only gues, but there is usually a simple answer, that doesn't involve any conspiracy.