Wow!!!! I'm using a small, uncalibrated monitor at work, yet I can see a difference (small) even compared to the 70D at high ISO. Is it just me or do you also notice an improvement?
I can definitely see an improvement over the original 7D, but I really can't see any improvement over the 70D.
EDIT: Well, I double checked the ISO 25600 and in some parts of the sample I can see the 7D II being better (say the bottle of wine vinegar), in some areas it is the same (say the bottle of pepper oil), and in some areas, the 70D giving a nicer look (shadow noise between the pepper oil and the colouring box). I think I need to see how the samples will look like on dpreview to get a better idea.