Tesla updates Optimus humanoid robot roadmap: Gen3 debut expected mid-2026, with production start planned for July-August. Strategic scale expanded significantly, with Fremont factory's Model S/X line converting to dedicated robot production. Target is mass production by end of 2026, aiming for 1M unit annual capacity and long-term goal of 10M units. Gen3 features deep iteration on Gen2, focusing on hand design and AI algorithms, with 22-DOF dexterous hands and behavior cloning. External scenario testing begins next year.