Cumberbatch supposedly gave a pretty firm denial in some video interview a couple of days ago. He was at Comic-Con for some animated Dreamworks movie he's doing a voice for. People were citing him being there without a Sherlock panel as evidence that he'd be announced, but obviously he had a legitimate obligation. Still not impossible (people lie about these things all the time), but now the rumor mill is saying it's going to be Joaquin Phoenix, who was spotted picking up Doctor Strange issues at a comic shop in Connecticut for "research" last week. That choice does not thrill me, but we'll see.