lol my friend and i were just discussing this; he has last year's model and i've got the refreshed 2011 one.
on his mbp he has to press the capslock hard for it to turn on but on mine i tap it as i would any other capslock button on a laptop and it is immediately enabled.
i think this is ********, just Apple trying to cover their tracks for a badly designed capslock key which they've now fixed in the refresh. i certainly don't have any modification to the capslock function but maybe someone else with a 2011 can give their thoughts.