He's got kind of an odd face, which is good, is young, which doesnt matter, and I've only seen him in Narnia so...my first reaction was 'oh it's that guy with the eyebrows'. Don't think he's been officially cast yet though.
Excellent young actor, very good in Wild Bill and Son of Rambow and from what i've read he's great in Glassland too (that's on my to-watch list).
The age thing is interesting. I wonder if they'll make him up much older or keep it similar to his actual age?