One apparent, small setback at GF3 is that the row of supercharger stalls that was operating south of the main factory building has been removed, with earth work going on at that location.
It looks like there’s a whole bunch of Supercharger stalls on the west side of the factory, to the right of the main entrance, check @ 7:50 in the video.
It looks like they determined that the East-West passage South of the main factory building has to be moved slightly South, closer to the new building they are putting up.
I’m not convinced there will still be any external East-West passage, they might simply build up the whole area and connect the Phase 1 building with the drivetrain/battery pack building.
At the moment there seems to be no direct access East-to-West, which suggests that newly-produced cars go to the West side for that testing loop, and once they complete it they go back into the building and exit on the East side (don’t remember the exact gate number, might be 01, it’s the first one north of the black section, someone pointed out there was a Model 3 coming out from there in last week’s drone footage).