I can’t see any mention of the feature being delayed. I’m on the iOS 26 RC, I’m on an iPhone 16 Pro with Apple Intelligence, and my AirPods Pro 2 are on the latest beta firmware 8A343a. So, I believe it should work. (As per Apple’s availability overview.) Yet I don’t see any option to enable it in Settings or in the iOS Translation app.
Has anyone figured it out yet?
Not to be ironic, but have you tried asking Apple Intelligence about the issue?