Because we're going to see alot of smokescreen.
Sure, they may "address" the antenna issue, by addressing it I mean, they may say something like we weren't aware of any issues at product release, but even still, only small percentage of people may have been able to duplicate the issue as they have seen on tech blogs, but it's still the most "magical" antenna out there, and the problem still lies with AT&T. "HEY! YOU ALL HAVE FORGOTTEN ABOUT HOW CRAPPY AT&T'S NETWORK IS!!! But! our upcoming patches will take care of all of that!"
Also expect them to focus more on the CR smartphone rating rather than whether CR recommends it. Nevermind CR's final decision, focus on only the positive CR had to say about it.
And, they will try to distract attention by bringing up sales figures for iPhone 4, what's going on at the app store, and lastly...iOS4 for iPad, no doubt they will throw some BS in about that.
But a press conference scheduled at 10 a.m.? NO, they aren't doing a recall. If they were going to do a recall, they would announce it Friday AFTER the stock markets closed, to give time for the stock market to cool off over the weekend. Same reason earnings reports are released after hours.
Free Bumpers for everyone? odds? you pick 'em...but I'm leaning to no seeing as they've already sent internal docs to employees saying not to hand them out, and given how arrogant they were in their original stance.
In short, expect Apple to adopt the same delusional, arrogant, idiotic view about their products that their brainwashed fanbois do.