I sort of guessed these specs, but never guessed they'd announce it or release it in June. I was expecting Novemberish.

5.9 inch
4K display
New beefy Exynos processor
New front-back cameras
New fingerprint reader
SGS6 styling
No waterproofing, No repl-battery, No microSD, No dualSIM.
Edge variant
VR head unit (and advertising)
A larger battery (3,500mAh ?)
8.9mm thickness

I wasn't expecting:
June release/announcement
7.0mm thickness
4,100mAh battery

And we already know its draw-backs:
Android 5.0 instead of Android 5.1
TouchWizz is still full of bloat
KNOX security prevents warranties
Lack of documentation and sources make porting AOSP a challenge, and Ubuntu/SailOS/Nemo/FFOS an impossibility
Price increase
4K is gimmick at the moment (big strain on 3D performance, battery life, storage capability)
VR isn't properly executed
No kickstand !
Loudspeaker is on the back, and it sucks
Front and rear glass more vulnerable than ever before
Bezel-size around 73%, still short of the 80% golden point

Man these specs make the N9 and Jolla seem like a joke.
:'(