I'm thinking maybe the conference will announce 2 things? 1 - New iphones will come with a very thin plastic (or some material) coating to prevent signal loss. 2 - Any current iphone user can go to a genuis bar and get their iphone "fixed" and have this coating put on which is the same as getting a new one from the factory (this is what they could claim). Hopefully they won't charge $29.99 for the plastic coating though. This seems the most cost efficient idea for Apple. Maybe they've been weighing a completely new design with one that is simpler and can be applied to the 1.7million people who already have iphones.