What does all this secrecy buy them? Nothing.
- Protection of IP until a few weeks from launch date
- Rapt attention for what amounts to a PR presentation
- Synchronized media buzz for new products
- Strong early sales leading to additional media buzzWhatever you say about Apple, they very carefully manage there brand, and part of that is keeping things secret, controlled releases of information, and building up large buzz before there regular announcements. It seems to be working for them.