Apple Watch Series 10: Insights from a Leaked Prototype

A recent leak of a prototype for the Apple Watch Series 10 has ignited discussions regarding Apple’s upcoming advancements in health monitoring technologies. The images, which were unveiled by renowned leaker @StellaFudge, showcase a distinctive layout of sensors that starkly differs from the version of the Series 10 released last year.

Unique Sensor Arrangement in the Prototype

This leaked prototype introduces a newly designed array of sensors, featuring significantly smaller heart rate and blood oxygen sensors that are now placed nearer to the center of the device. This innovative configuration has allowed for the inclusion of an extra light ring surrounding the sensors, a feature that has not been present in any prior Apple Watch models. However, its specific function remains a mystery due to the prototype operating on an internal build of watchOS 11.1 that lacks pre-installed health applications, making it difficult to evaluate any new functionalities.

Details from the Leak

Insights into the prototype Apple Watch Series 10 reveal a remarkable health sensor layout. The health sensors have been significantly reduced in size, complementing the additional light ring that encircles the device. Furthermore, the watch is running a version of watchOS 11, specifically between 11.1b5 and 11.1rc.

— Stella – Fudge (@StellaFudge) March 31, 2025

Future Health Monitoring Features

Speculation regarding Apple’s incorporation of blood glucose and blood pressure monitoring capabilities into the Apple Watch has circulated for quite some time. Nonetheless, various challenges have hindered the rollout of these features. Although Apple has been actively testing these sophisticated sensors, they were ultimately excluded from the final iteration of the Series 10, as the company focused on refining the new design introduced last year.

Ongoing Development and Testing

The leaked prototype appears to have been utilized internally for testing purposes, suggesting that Apple is diligently pursuing more advanced health monitoring functionalities. The internal version of watchOS 11.1 on this prototype dates back to October 2024, indicating that Apple has been enhancing the technology for an extended period. Yet, it remains uncertain if these new features will be operational for the upcoming Apple Watch Series 11 or if further delays are likely as the company navigates the technical difficulties associated with integrating such innovations.

Implications for Future Apple Watch Models

Although the official Apple Watch Series 10 was launched without any significant new health monitoring sensors, the existence of this prototype implies that Apple harbours much more ambitious aspirations for health tracking capabilities. Whether these features will ultimately be released remains to be seen, but the prototype leak has undoubtedly heightened anticipation for future Apple Watch iterations.