Those would be offered alongside white and gray. A new rumor today claims Apple will release the iPhone 16 Pro (and presumably the iPhone 16 Pro Max right.
A new rumor today claims Apple will release the iPhone 16 Pro (and presumably the iPhone 16 Pro Max right alongside it) in new Space Black and Rose colorways. These would be offered in addition to white and gray.
Thus, the Blue Titanium option that is currently available for the iPhone 15 Pro and iPhone 15 Pro Max will be dropped for the next generation.