One of the big changes for Siri in iOS 17 is the ability to trigger the assistant by simply saying
iOS 17 features that no one is talking about [Video] - 9to5Mac
How did Siri get its name? - Quora
accessibility - MacStories
iOS 17: Here's the list of which features will work with your iPhone
How to Stop Siri on a New iOS 16 - Disable Hey Siri Command
iOS - Wikipedia
If Siri isn't working on your iPhone - Apple Support
How to drop the Hey from Hey Siri on iPhone
10 New Features & Changes for Your iPhone in iOS 14.4 « iOS & iPhone :: Gadget Hacks