CPU-Z leak claims a native resolution of 2560 x 1440 for the 5.77-inch display.
http://www.notebookcheck.net/Samsung-Galaxy-Note-6-may-come-with-6-GB-of-RAM-and-Exynos-8890-SoC.164009.0.html
The possibility of unappealing non-removable battery in Note 6 because of its water proof capability makes me unwilling to purchase for.My Note 5 had a battery problem that took a week to be replaced and returned back by Samsung service.They also took it granted as its warranty!
I recall that my Note 4 had the same problem,but I did replace the battery in a minute!