> Does anyone know -
>
> a) Is this list liable to be extended by September?
>
> b) Will I need to purchase Voice Control Option (620) in order to
> get voice based dialling?
>
Not sure about the list but I can answer your second question - Yes you do need voice control for the phone to dial names in your address book via your voice.
With regards to a) - you are best to speak to your dealer and they can confirm if your phone works or not.