Thank you for contacting Intel Communities.
As far as I am aware, the issue you are referring to hasn't been reported to Intel; however, I would appreciate if you can provide any links/URLs where you found information about the issue.
In addition to this, if you experience issues when you receive your Intel® NUC Kit NUC7i7BNH I would recommend contacting support to open a case for you.
I hope to hear from you soon.
The status of the thread you mentioned is that the issue of 3D frame packing failure on HDMI 2.0 has been acknowledged by INTEL and "engineering" is looking into it. There is no solution at present and months have ticked by with no progress. There is also another earlier thread HD6000 3D Blu ray performance issue that started back in October 2015 on the same issue where the problem with playing 3D ISOs was also acknowledged and sent to engineering. No solution or report back from engineering was ever provided and the thread was eventually marked "Assumed Answered".
You would be ill advised to buy Kaby Lake for playing 3D ISO files. In a nutshell, it does not work and the two threads where the issue is addressed are going nowhere.