Tesla's highly anticipated holiday update has brought a plethora of exciting enhancements and undocumented changes, surprising owners with improvements that go beyond what was mentioned in the release notes. Notably, vehicles equipped with the Intel Atom processor received substantial upgrades, making this update a true gift for many Tesla owners.

Among the hidden improvements, several notable features have been identified:

1. Seamless Transition to Cellular: Tesla has improved the transition from Wi-Fi to cellular connections. Previously, vehicles connected to Wi-Fi would experience a brief period without internet until the cellular connection was established. Now, vehicles immediately connect to cellular data upon entering drive or reverse mode, ensuring continuous connectivity.

2. Enhanced Reverse Experience: When in reverse, Tesla vehicles now display reverse lane markers on the visualization, guiding drivers along the vehicle's path. Additionally, for vehicles equipped with ultrasonic sensors, the distance to objects behind the vehicle dynamically changes based on the steering wheel's position. This helps drivers in determining the distance to objects in their intended direction.

3. View Supercharger Amenities on Map: Tesla now allows users to tap on amenity icons when viewing Supercharger details in the vehicle. This feature enables drivers to see the exact locations of nearby shops or stores, providing a more detailed overview of available amenities.

4. Autopilot/FSD Beta Strike Reset: The holiday update resets FSD Beta strikes for all users, granting a clean slate. Previously, accumulating strikes resulted in the loss of Autopilot and FSD Beta access. Vehicles with a cabin camera are limited to five strikes, while those without are limited to three strikes.

5. Improved Dashcam and Tesla Theater Performance: The holiday update brings significant improvements to the Dashcam feature. The dashcam icon now provides more informative indications, with different icons indicating saving/loading, saved footage, error/not recording, and paused states. Moreover, thanks to hardware video decoding, the Dashcam Viewer and Tesla Theater now offer smoother and faster experiences.

6. Adjustable Windshield Wipers: Previously, turning off automatic windshield wipers was not possible while using Autopilot or FSD Beta. However, the holiday update now allows users to disable automatic windshield wipers, providing greater control over the feature.

7. Mandatory Automatic Emergency Braking (AEB): AEB is now a required feature if Autopilot or FSD Beta is enabled. This feature helps bring the vehicle to a stop for perpendicular dangers or in reverse, even if Autopilot or FSD Beta are not active.

8. Optional Automatic 911 Calling: The holiday update introduces automatic 911 calling if airbags are deployed and the driver's phone is connected via Bluetooth. However, this feature can be turned off by accessing the controls menu, ensuring user preference and privacy.

This holiday update showcases Tesla's commitment to consistently improving its vehicles' performance and user experience. These undocumented changes, along with the listed features, have made a significant impact on owners by streamlining operations and providing everyday convenience.

It is worth noting that Tesla's holiday update demonstrates the company's dedication to future innovations, leaving room for additional exciting features and enhancements to come. Tesla owners are eagerly awaiting further updates and can stay updated with the latest news by subscribing to the official Tesla newsletter.

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Note: Please note that the information provided is based solely on the text provided by the user and may not reflect the complete picture of the actual holiday update.