Apple Watch SE 3 Announcement Confirmed: Leaked Processor IDs and Model Identifiers

Apple Watch SE 3 announcement is likely this week, thanks to a last-minute leak from an anonymous X account. The leak reveals processor IDs and model identifiers for the upcoming Apple Watch models: Series 11, Ultra 3, and SE 3, which will all use the Apple S11 chipset. The SE 3 may feature a plastic casing and larger displays, similar to Series 7, Series 8, and Series 9.

Apple Watch SE 3 is expected to be announced this week, following a last-minute leak from an anonymous X account. The leak revealed processor IDs and model identifiers for the upcoming Apple Watch models: Series 11, Ultra 3, and SE 3, all of which will use the Apple S11 chipset [1]. This development comes amidst rumors about the Apple Watch SE 3's potential features, including a plastic casing and larger displays, similar to those in the Series 7, Series 8, and Series 9.

The anonymous X account tweeted processor IDs and other model identifiers for the three upcoming Apple Watch models, suggesting that all three will use the same chipset, the upcoming Apple S11. This aligns with previous rumors about the new chipset [1]. The Apple Watch SE 3 is anticipated to shift to the design language first seen on the Series 7, with the device expected to feature slightly larger 41mm and 45mm cases, offering display sizes of 1.6 inches and 1.8 inches [2]. This design change would bring the SE model visually closer to Apple’s premium watches.

At the core of the update is the new S11 chip, which is based on Apple’s S9 and S10 platforms but represents a clear step forward from the S8 chip used in the current SE. The processor is expected to enable smoother performance, support for on-device Siri, and gesture controls such as double tap [2]. Storage upgrades could also follow, although specific details are not yet confirmed.

Health-tracking features are expected to remain limited compared to Apple’s higher-end models. ECG and blood oxygen monitoring are unlikely to appear in the SE 3, but Apple may expand capabilities through software by activating sleep apnea detection. The device could also move to the third-generation optical heart sensor, a component that debuted with the Series 7 [2].

Apple had reportedly tested a lower-cost plastic shell for the SE, similar in approach to the iPhone 5c. However, those plans were later scaled back due to design concerns and limited cost savings. The SE 3 is therefore expected to continue with an aluminum build [2].

Pricing is expected to remain unchanged, keeping the line positioned for younger buyers and families. The current SE starts at $249 for the smaller case and $279 for the larger one [2]. Apple will confirm full details during its September 9 event, with pre-orders likely to begin on September 12 and retail availability set for September 19.

References:
[1] https://9to5mac.com/2025/09/07/apple-watch-se-3-launch-next-week-increasingly-likely/
[2] https://www.bizzbuzz.news/technology/apple-watch-se-3-release-what-changes-what-stays-the-same-1371086