...slight chance.
There's a lot more rumors floating around about the impending release of Logic now than there was in the past 6 months. If they're true, logic will be out within the next 3 months.
I'd be doubtful it'll be at this event. It's possible, but I'd bet it's iPods and little else.
However, I've seen a couple of people claiming September is the month (but no one claiming it to be at this event). No reliable sources per-say, but a few random people on audio forums claiming to be or to know beta testers. It does seem clear that logic has been being beta tested for at least a couple of months.