Kermode isn't doing it -and that's from the horse's mouth. It was all just speculation since, after Jonathon Ross, the only other film critic most people can think of is Kermode.
I like Kermode (and having just met him can say he's a really down to earth and truly smashing bloke) and put more faith in a reviewer who will justify why he thinks The Exorcist is the greatest film ever made over someone who just says Citizen Kane (or whatever). He reviews from the heart and not from some highbrow arty perspective.
Having said that, he did like Star Trek, which was rubbish.