Being how upset Apple's shareholders and consumers are currently with the product line and iPhone slump. I think this keynote will be one of the most anticipated, again, not for the product line, but the changes or lack of to the product line. For example, what to expect with the the new iPhone? Is the iconic headphone Jack deleted? If the Jack is deleted, how does Apple remedy the alteration? Adapter provided? Any MacBook Pro updates?
I think it will be a tuned in event for sure, mostly those looking to see what Apple's play will be. And you have to remember, the September iPhone Key Note is a major worldwide event that draws a large viewing audience.
I see your point, might gets lots of people tunning in, not cause they are happy, but because they want to see apple's spin on the current state of affairs.
The only reason I'd tune in, is to hear the lame excuse on why I no longer need a 3.5mm jack, but honestly , this time round it's not worth me wasting 2 hours on it, just really not excited about the new iPhone for the first time since 2007.