The annual WWDC Developer Conference will open in the early morning of next Tuesday (June 10). As usual, the first developer preview version of the new system will be pushed on the day of the event, so you can try it out.
Before the event, the list of models of Apple's new system has been exposed this year. Let me give you a brief inventory.

First of all the new Apple systems this year will adopt a new name, named after the year "26", corresponding to the release cycle from September 2025 to September 2026.
iOS 26 supports models:
iPhone 11, 11 Pro, 11 Pro MaxiPhone 12, 12 mini, 12 Pro, 12 Pro MaxiPhone 12, 12 mini, 12 Pro, 12 Pro MaxiPhone 13, 13 mini, 13 Pro, 13 Pro MaxiPhone 14, 14 Plus, 14 Pro, 14 Pro MaxiPhone 15, 15 Plus, 15 Pro, 15 Pro MaxiPhone 15, 15 Plus, 15 Pro MaxiPhone 16, 16 Plus, 16 Pro, 16 Pro MaxiPhone 16eiPhone SE 2, SE 3
Compared with last year's iOS 18, the three models of iPhone XR, Xs and Xs Max no longer support the upgrade of new systems.
iPadOS 26 supports models:
iPad 8 and subsequent modelsiPad mini 5 and subsequent modelsiPad Air 4 and subsequent modelsiPad Pro 11-inch All modelsiPad Pro 12.9-inch, 2018 model and subsequent models
iPadOS 26 eliminated the A10 chip, so the digital iPad 7 this year cannot be upgraded. The other series have not changed, and the adapter model is the same as before.
macOS 26 supports models:
MacBook Air, M1 and subsequent modelsMacBook Pro, 2019 and subsequent modelsiMac, 2020 Model and subsequent modelsMac mini, M1 and subsequent modelsMac Studio, all modelsMac Pro, 2019 and subsequent models
further narrows the adaptation range of Intel models and also marks that the iMac Pro will exit the stage of history.
watchOS 26 supports models:
Apple Watch Series 6 and subsequent modelsApple Watch Ultra, Ultra 2Apple Watch Ultra, Ultra 2Apple Watch SE 2
For the watch, the new system adaptation model is consistent with last year, but the new features may differ between different models. It should also be noted that the Apple Watch SE 2 refers to the 2022 model, which is the currently on sale version. The SE series has not been updated in recent years.
HomePod software update 26
According to technology media MacRumors, the HomePod software will also be renamed "26", which will support the first generation HomePod and all subsequent models.

Article: HomePod product line has not been updated for many years. It was previously mentioned that Apple has developed the second generation HomePod mini and will be equipped with its own Bluetooth and Wi-Fi chip for the first time. I wonder if it will be unveiled on WWDC25 in a few days.
Are you looking forward to Apple's new system this year?