Thanks to highly active Tesla Giga Texas "watcher" and drone operator Joe Tegtmeyer via Teslarati, we now know that at least four huge shipments arrived from IDRA recently. Tegtmeyer produces videos of the happenings around Tesla's Austin factory and also invests himself in learning what's underway. He recently posted that more packages with Cybertruck Giga Press parts have been delivered.
For those who may be unaware, IDRA is the company that makes the large diecasting machines that Tesla uses to create body megacasts for the Model Y crossover. These machines help streamline and speed up production, make the vehicles more durable, and allow the battery pack to be built right into the EV's frame.