Can't speak for others, but to me he looks a bit like Kryten from "Red Dwarf".
As someone who knows nothing about British TV rights (like what channel shows are on, who owns what, etc) or Red Dwarf, I'm still surprised that Doctor Who has crossed over with the soap opera EastEnders but (as far as I know) done nothing official with Red dwarf.
Just the general look makes me think that Tennant really is playing a new Doctor with an old face instead of just being 10 again. I could be completely wrong but thats just the feeling I'm getting from these pics.