Today, Panasonic, Tesla’s partner for battery production at the Gigafactory, said that process automation has progressed and they now expect the output to “soon” increase.(...)
That would indicate at least one of the bottlenecks in the last week is still Batterie production.
Tesla Gigafactory battery production for Model 3 is about to increase, says Panasonic
This is old news (like 20-30days) .. statement was made post earnings/cc for panasonic .. a lot could have changed by now .. hopefully all for the better