More Storage and Micro-SD Slot
A big problem with the Note 5 that lead many Note 4 owners to pass on it, was the lack of a micro-SD slot. There was only 32GB of storage, which simply isn't enough for most. I have three family members with the Note 5, and they all have no space left and are constantly deleting photos, apps or videos to make space or else the phone slows down. It was a huge complaint for all Samsung buyers in 2015, but won't be a problem this year.
The new Galaxy Note 7 will reportedly be doubled and come with 64GB of storage by default, not to mention a micro-SD slot that can take up to 256GB micro-SD cards. This will be perfect for those who need more storage.
There could be a 32 and a 64GB model, but so far we're hearing just the latter, and the micro-SD slot is guaranteed at this point.