I'm not at this point surprised Cumberbatch is canon. The wind has been blowing that way for a while now.
Eve - it seems you have probably four main candidates out of the obvious: Carol Marcus, Elizabeth Dehner, Marla McGivers (redhead in TOS but doesn't need to be here) or Christine Chapel. But others do exist, of course.
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist