Tesla rolls out FSD update

Tesla has started pushing a new Full Self-Driving Supervised update, version 14.3.1, to a small group of early owners in the United States rather than the broader fleet. (notateslaapp.com) The update is bundled inside vehicle software build 2026.2.9.7, which trackers list as released on April 14, 2026 for Hardware 4 versions of the Model S, Model 3, Model X, Model Y and Cybertruck. One tracker showed only seven cars on the build and about 0.1% of fleet installs when the notes were published. (stats.tessie.com, notateslaapp.com) Tesla’s published notes for 14.3.1 match the prior 14.3 release: a rewritten artificial intelligence compiler and runtime using Multi-Level Intermediate Representation, or MLIR, plus a claimed 20% faster reaction time. The notes also list upgrades to reinforcement learning training, the vision encoder, traffic sign understanding, parking behavior and responses to emergency vehicles, school buses and small animals. (notateslaapp.com, stats.tessie.com) Full Self-Driving Supervised is Tesla’s driver-assistance system that can steer, change lanes, navigate routes and park, but Tesla says it still requires “active supervision” and does not make the car autonomous. Tesla sells the feature for $99 a month and says it is currently available in the United States, Canada, China, Mexico, Puerto Rico, Australia, New Zealand, the Netherlands and South Korea. (tesla.com) That distinction has been central to Tesla’s recent rollout strategy. When version 14.3 began shipping on April 7, reports said Tesla first sent it to Early Access Program members rather than a wide release, and the new 14.3.1 build appears to be following the same pattern. (digitaltrends.com, notateslaapp.com) Tesla has been using version 14 to widen exposure to the software while keeping guardrails in place. A Tesla support page for the version 14 trial said eligible owners in the United States, Puerto Rico, Mexico and Canada needed version 14.2 or later, though Tesla now says that trial is no longer available for new and existing owners. (tesla.com) The 2026.2.9.7 package also carries non-Full Self-Driving changes, including Blind Spot Warning While Parked and an Autopilot naming update, but the headline remains the self-driving software point release. Tesla’s own release notes also list “expand reasoning to all behaviors,” pothole avoidance and stronger driver monitoring as upcoming improvements rather than features shipping now. (stats.tessie.com, notateslaapp.com) For now, the practical takeaway is narrow: Tesla has moved from 14.3 to 14.3.1 without changing the public feature list, and it is still testing that software with a limited set of early drivers before any wider deployment. (notateslaapp.com, digitaltrends.com)