Its sort of been hinted at so far that Walt has something special about him, and maybe we'll start to see more of what that is.
Yeah it's been more than hinted. His mom's new boyfriend outright wanted Michael to take custody of him because "weird things happen when he's around." He was reading a book about birds when all of the sudden one came screaming into the window and broke it's neck. He's a freaky little kid.
Don't forget, he's also the reason the Polar Bear kept showing up.