Here is why I think there will be NO press conference.
1. Steve is sick. Too sickly to get up on stage and talk, if he does down goes the stock price.
2. If they had a conference someone else would need to speak. Likely a mixture between Scott Forstall, Schiller, Mansfield, and maybe Ives. They are all decent, but none of them are Steve. A conference isn't the same without Jobs, and we don't need more negative PR based on bad-speakers and no sign of Jobs.
3. Apple realized Jobs may be more out of the picture soon (god forbid) but it's possible. Apple has no real front-runner to take his place. Sure, Scott has the face for it, but he can't replace Steve right away.
What is my point? Apple knows that conferences without Steve might generate bad PR. So they want to get people used to releases WITHOUT conferences. People have come to expect amazing things from apple every time with a media event.
Come Thursday we will have some new releases, apple will post a video online like they did with the MBA detailing the design changes (if any).
Lightpeak? Before the recent CNET report everyone doubted it. I still think the chances are slim, but anything is possible.
lorax3