This comes from Aint It Cool who were apparently sent it via Twitter. As they say, it does look like Hardy’s signature and, more importantly, the image isn’t obviously from anything else. Seems likely to me- the only thing is, those look like jeans and not the leather trousers he was wearing in the one set picture we had.
Maybe he has a costume change. And maybe the beard we know he has in some of the film isn’t permanent. Men can change their trousers and shave even when in the middle of an epic apocalyptic misadventure.