There's absolutely no reason for them to introduce a new mechanical camera system. They previously marketed their cropping of the center 12MP of their 48MP sensor as 2x optical zoom. They will use the same method here.
Strongest argument that they didn't is that adding something like that is absolutely a thing Apple would have talked about at length in the press release. They love getting to do extensive "here's something cool that 'only Apple could do'" segments. (And we love to make fun of them for it.)
Strongest argument that they didn't is that adding something like that is absolutely a thing Apple would have talked about at length in the press release. They love getting to do extensive "here's something cool that 'only Apple could do'" segments. (And we love to make fun of them for it.)