Whenever reviewers start jumping out the window over something as simple as this you know it's shady.*SIGH* Steve from Gamer Nexus, who I usually respect, makes a claim that some of the board makers will not provide an updated vbios for the cards. I find that particularly a bad practice to make a claim like then but then provide no proof nor names of those who will do so. Instead, he just says AMD messed up but provides nothing to show us that will actually occur nor what card OEM's are going to do that.
A wild guess might be because he does not want to bad mouth the folks who pays his check or puts food on the table. In this case, I am just guessing and it would be good to see if he can provide the proof or not. (Did get a bit frustrated in the comments section of youtube on his video though.)
All of a sudden looking at the box for specs becomes impossible. All of a sudden they get amnesia because no one else releases video cards that differ from official specs and they certaintly don't give them to reviewers to test which may or may not affect results. /S **like big time***