I can help there...
YT has a number of really good drone pilots who daily fly overs. Joe Tegtmyer and Randy of Texas Terrafactory do outstanding work.
The latest is Austin has its Idra Casting machines up and running and stockpiling front and rear MDY castings. A number of pre-production vehicles have been produced with one hanging from a 2nd floor ceiling as eye candy for the pilots. (Typical Tesla stunt
)
They are planning a grand opening event to be held on site just like they did with Berlin. So no, production has not started. The structure is about 85% complete. Workers have been hired as there were numerous days of orientation observed. So, new workers are currently in training.
Musk stated at the shareholder meeting that production would begin before year end and not ramp up fully till late 2022. It appears that we are right in line with that start date. Great!
Do check out YT the videos. They really quite good.