Reliable sources pointed towards a "late October" event. Even the rumors on the main page say "late October".
I'm not surprised there are no so many rumors; MBP and iMacs (the two most likely devices to be updated) are going to preserve most of its form. Actually, the only thing that is probably going to change design-wise is the Function Row and that's exactly the only thing that has leaked.
Most of the updates will be the internals, so there is no much room for info to be leaked.
The iPhone 7 rumors were only about the removal of the headphone jack and the dual-camera; because those were physical changes to the phone. Besides that, there was nothing else but pure speculation (like the one happening right now).
Well there were also rumours about the new jet (aka piano) black colour, 256GB storage, larger battery, reduced antenna bands, waterproofing.
But I still agree there will be a late October update. Even though very little has leaked.
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