This makes the 360-400k 2019 total deliveries guidance in the shareholder letter look a bit ridiculous. Not even an overlap with this new 420-600k production suggestion. I presume and hope the guidance on this media call today has been approved by the Tesla comms team, though it doesn't necessarily contradict what was said on the Q4 call.
420k Model 3s would be equivalent to c.8k cars per week for 9M19, followed by c.11k per week in Q4 with GF3 ramping immediately to capacity from September, all with 1 week downtime per quarter. I think getting to 500k Model 3s would likely require more significant capex in Fremont.
I know some company (such as AMD) does not include unannounced future news in guidance. Is this also the case for Tesla? So this is the post SR announcement vs pre-announcement from the letter?