FroKnowsPhoto has posted their “PRE review” of the production EOS 7D Mark II that they recently got their hands on.
You can also view some full resolution ISO 12,800 and 16,000 sample images at the FroKnowsPhoto website.
“The samples images that I am sharing first show ISO 12,800 and 16,000. The 12,800 looks to be pretty solid for a cropped sensor camera. The 16,000 on the other hand is a little mushy but again it’s 16,000 on a cropped sensor it’s totally acceptable.”