Hang on. Now I'm really confused. I had assumed, as a Pebble user, that the Apple Watch would act in a similar way and by default would receive every single notification that the iPhone displays automatically (unless specific ones are turned off in settings). I assumed that if an app was specifically updated to "work with" the Apple Watch that this only meant that the notification could be actionable or that some greater degree of interaction would be provided for...
What is being suggested here is not at all what I had in mind. Is it really the case that unless an application is updated to work with the Apple Watch then it will not be able to display any notification at all? I find this hard to believe. Existing apps work fine with Pebble without requiring a Pebble-specific update. Are you guys certain about this?