Few things are certain in this strange world. But there are some facts I am certain of. For example, that the sun will rise tomorrow and set tomorrow, that the tax commissioner will eventually come around, and that Apple will unveil its new Apple Watch Series 11 smartwatch in the fall.

This is the tenth consecutive year that Apple has released an updated version of the brand's flagship smartwatch model, and the tradition is expected to continue in 2025. The question is what new features, technologies, and advancements will the Apple Watch 11 offer?

I have been monitoring all the leaks and rumors about the Apple Watch 11 since before the Series 10 came out in September. With more than nine months to go before the next smartwatch arrives, details are still murky, but there are some clues.

Here are all the Apple Watch 11 rumors worth knowing so far.

The Apple Watch Series 11 will likely launch in September 2025 alongside the iPhone 17, assuming Apple follows its usual pattern of rolling out new devices in the fall ahead of the holiday shopping season. Rumor has it that the Apple Watch SE 3 is also expected to launch in 2025, possibly at a lower price. [My gut feeling is that the Apple Watch 11 will be priced about the same as the Series 10, starting at $399 for the smaller 42mm (non-cellular model) and $429 for the larger 46mm (non-cellular model).

While the Apple Watch 11 is still some way off, there are a couple of design-related rumors worth noting: the first is a possible upgrade to a more energy-efficient display technology, possibly LTPO or Micro-LED, although the latter seems to be off the table at this time.

The advantages of switching from OLEDs to newer display technologies are numerous and include not only improved battery life, but also the possibility of higher pixel density. This could result in increased resolution and potentially improved brightness and color saturation.

Other than the display improvements, there will be no major changes to the design of the Apple Watch 11 compared to the Series 10. The latest generation has a larger display and a sleeker, lighter case compared to the Series 9, and I fully expect the physical dimensions of the Series 11 to match those of the Series 10.

Because of Apple's pending dispute with rival Masimo, the latest Series 10 smartwatch was launched in the U.S. with its SpO2 monitoring technology disabled. Will blood oxygen measurement return in the Apple Watch 11? However, according to Bloomberg's Mark Gurman, it is possible that future Apple Watch releases will include some form of blood pressure monitoring and blood glucose tracking. While the latter is unlikely and the Holy Grail for wearable makers, the former seems more likely.

If Garman's insight proves true, the latest Apple Watch models could alert users if early signs of hypertension are detected. Like sleep apnea, hypertension often goes undiagnosed, but the potential of this new feature is significant because it is a fairly deadly disease, accounting for nearly 13% of all deaths worldwide, according to the WHO.

The Notification Summaries introduced in iOS 18.1 give us a sense of the potential, but the Apple Intelligence feature has yet to really make it to the Apple Watch Apple Intelligence is expected to make its full debut in Cupertino's forthcoming wearable, especially in the form of an enhanced Siri experience.

Other upgrades could include a move from 4G LTE to 5G technology. We also expect the new Series 11 to launch with Apple's next-generation operating system watchOS 12 and a faster, more efficient S12 processor. If Apple follows past patterns, we expect a preview of watchOS 12 this summer when the company holds its annual developer conference.

Apple Watch 11 rumors are still in the early stages. As such, take these predictions with a grain of salt, as well as speculation. Apart from the processor and software enhancements, nothing is certain.

That said, I expect the Apple Watch Series 11 to be the first smartwatch in the brand's longest-running wearable line to surpass 18 hours of battery life. Better power management with a more efficient display is likely the ticket to that achievement, and it would be great to see the Series 11 deliver both a better screen and longer life.

I am also cautiously optimistic that Apple Watch 10 will at least support Apple Intelligence features like the new and improved Siri. I am less certain about the inclusion of innovative new health monitoring tools. The same is true for the SpO2 monitoring feature for U.S. customers.