People who try to foretell the secret plans of Apple use many methods. The most common is keeping track of patents that Apple registers with the US Patent Office. This was how people found out about the iPad a good while before it was revealed.
Patently Apple suggests that future iPhones could have specific citizen journalist features, such as “report” and “interview” modes. Basically, it works by detecting the direction of speech and switching on either the front or rear camera, based on who’s talking. The phone acts as technical director to your news story.
Read more about it here.
I should also note that sites like Patently Apple are good examples of data mining journalism, which we have talked about before.