So we know who Prince Caspian is:
Won't it have been nice to actually have someone closer to the age of the kid in the book? You know, 13? And won't it have been even nicer to not have the Susan/Caspian shipping that apparently is going to be part of the new movie. Poor Susan. As if canon doesn't already give her a short stick, her movie incarnation will forever be regarded as the couldn't-hold-a-candle-to forerunner of Ramandu's daughter/celestial princess/Caspian's eventual wife/Queen of the last Narnian dynasty.
But at least he's pretty. That compensates. I daresay not much but it's a start.