The Galaxy Note 6 will feature a 5.8-inch QHD Super AMOLED touchscreen (whether curved or not remains to be seen), the same 12 MP dual pixel camera that's in the S7 and S7 edge, 6GB of RAM, and a 4,000 mAh battery. As for the chipset employed, there are once again two to speak of - a new (but unnamed) version of Samsung's own Exynos 8 Octa (with slightly higher clock speeds than the 8890 in the S7), as well as Qualcomm's Snapdragon 823. It's likely that some markets will get the latter, while most will see Samsung's own silicon, emulating what's happened with the Galaxy S7 and S7 edge.
The internal storage will be 32GB, expandable via a microSD card slot. Samsung will apparently make the Note 6 official a very short while after Google launches Android N, and the Note 6 should run that version of the OS from day one. The Note 6 will of course sport a fingerprint sensor, but it may also come with an iris scanner.