When I read the new Star Trek comics (for the Kelvin timeline) I wondered only one thing: How canon are they? (in regards to the film-series)
They're considered canon.
Like the Countdown comics from 2009, the current ongoing Star Trek comics are considered canon. This means Gary Mitchell is out for Cumberbatch’s Star Trek 2 villain. (It also means Landru is out too, but we don’t hear anyone crying about that one.)
And the quote from the actual interview:
Roberto Orci: OK, based on that then with you Anthony Pascale as a witness, I hereby declare anything that we oversee to be canon.