You're probably not being stupid. 🙂
I checked to be 100% sure. In Xcode RC (16A242), I am seeing the new Apple Watch Series 10 Simulators.
Let's verify a few things to make sure you have all the right versions and are looking in all the right places.
I'm not sure if you happen to have multiple versions of Xcode installed. In a terminal window, type xcode-select -p
to verify one is selected as the current Xcode and it's the one you expect. Make sure the path that is returned is the path to your Xcode 16 RC location.
Then, make sure that you're running the right Xcode (Xcode -> About Xcode should say "16A242").
Now let's make sure you've got the right watchOS Simulator and SDK version installed. Go to Xcode -> Settings. On the Components tab, hover over watchOS 11.0 in the Platform Support section. Click the info button that appears. Both the SDK and Simulator version should be "11.0 (22R349)."
If all of that is okay, sometimes you need to add a simulator to your run destinations. In Xcode, go to Window -> Devices and Simulators, go to the Simulators tab, and scroll down to the watchOS simulators. You should see Apple Watch Series 10 simulators in the list. Select one, and in its "Show run destination" option, select "Always." If you don't see any Apple Watch Series 10 simulators in the list, you can add one. Click the + button at the bottom left, create a phone simulator and be sure to check the "Paired Apple Watch" checkbox, and click Next. In the Device Type for the Apple Watch, choose one of the Apple Watch Series 10 options. The OS Version will be watchOS 11.0.
I hope all of this gets you pointed in the right direction to find the simulators.
One more thing while we're here: you mentioned storyboards. Using SwiftUI and the design guidelines for watchOS help you build apps that look great on all devices.