There were no leaks. Only rumors. It's never good to base expectations on rumors.
Quoted for emphasis... "leaks" are often just rumors or straight up conjecture... Good rule of thumb is that if a leak comes out that completely contradicts most of the other leaks that have been floating around, it is often a complete fabrication. And even those 'multiple sources' leaks, those multiple sources may very well have come from a common source... this is a surprisingly small community and its pretty easy for a single rumor to blossom into a big story.
I saw some of these rumors of a 4000mah battery and 823 SoC, etc... but after a little bit of looking, I tossed them aside because they didn't add up... Samsung isn't going to use a processor that wasn't readily available by the time final fabrication was ready to roll.. these things aren't designed and built overnight and Samsung isn't the type to just throw caution to the wind and overhaul production at the last minute. They have to build a TON of Note 7's and changing from the 820 to the 821, even though it was a minor update to the processor (it is, you wouldn't notice a difference between the two), would have delayed shipment by a significant amount of time. Seeing as the 820 is an excellent chipset, there was no incentive for Samsung to mess that up.
As for the battery.... I didn't see it going the 4000mah route. I figured that it would be no bigger than the lump in the S7E based on the fact that I assumed the Note 7 would come in at the same size as the Note 5... 5.7" screen, overall dimensions, etc... Samsung doesn't do 'big' changes all that often. So they were building a 5.7" phone with tight bezels, a thin profile AND they had to make sure there was room in the chassis for the S-Pen and its cradle. Unless Samsung licensed the TARDIS from Gallifrey, they weren't going to be able to mash another 500mah into that tiny space.
So.. .long story short... never trust leaks or pen your hopes on them.