A claimed device compatibility list for watchOS 26 indicates that the upcoming update will support the same models as the current Apple Watch software.
If your Apple Watch runs watchOS 11, it should be compatible with watchOS 26
System Requirements
Apple Intelligence now requires 7 GB of free storage space instead of 4
Because of the latest generative AI features added, Apple Intelligence now requires at least seven gigabytes of free storage on your iPhone, iPad or Mac.
Apple Intelligence system requirements: What iPhone, iPad and Mac devices are compatible with generative AI in iOS 18?
Apple Intelligence requires modern hardware to run on-device generative AI and large language models, so here's a list of compatible devices
watchOS 11 system requirements: Legacy Apple Watch models no longer compatible
Compared with its predecessor, Apple's latest watchOS 11 software update marks the end of the road for a trio of legacy Apple Watch models.
macOS Sequoia system requirements: Is your Mac compatible with macOS 15?
If your Mac laptop or desktop meets the system requirements for macOS Sonoma, it's also compatible with Sequoia— with the exception of certain MacBook Airs.
iOS 18 and iPadOS 18 system requirements: What iPhone and iPad models are compatible with this update?
If your iPhone or iPad runs iOS 17 or iPadOS 17, rest assured it's compatible with Apple's iOS 18 and iPadOS 18 software updates—with a few notable exceptions.
iOS 18 should work on the same iPhone models as iOS 17, but iPadOS 18 could nix support for iPads running A10X Fusion
A leaked device compatibility list suggests that Apple's upcoming iOS 18 update will support the same iPhone models as the current 17 software.
macOS Sonoma system requirements: Is my Mac compatible with macOS 14?
Check the official macOS Sonoma system requirements to see if your Mac is supported because Apple has trimmed the device compatibility list for macOS 14.
iOS 17 to reportedly ditch support for the iPhone X, iPhone 8 and some old iPads
Apple has reportedly trimmed the iOS 17 system requirements, meaning some devices like the iPhone X won't be compatible with the update. Here's why.
watchOS 9 system requirements: Will this update run on your Apple Watch?
Read Apple's watchOS 9 system requirements and check the official device compatibility list to verify that your Apple Watch model can run this update.
macOS Ventura system requirements: Can your Mac run Apple’s macOS 13 update?
Read the official macOS Ventura system requirements to confirm that your current Mac has the required hardware to run this macOS 13 update when it drops in the fall.
iOS 16 and iPadOS 16 device requirements: Will your iPhone or iPad run this update?
The iOS and iPadOS 16 device compatibility list omits some iPhones and iPads that run iOS 15 and iPadOS 15 just fine. Find out whether your iPhone or iPad has the necessary hardware to run Apple's next major update when it's released this fall.