Yeah, the H50 is easy to install the pump onto the CPU IMO. You did have a twist and lock system whereas this new H60 looks to be a straight on set down and tighten bracket screw type like most air hsf are. I'm guessing, from reading their add, that the real difference is a better cooling system that's more quiet than the H50. I have heard some people complain about a loud pump but I always felt they got a bad unit since mine is nothing like some have reported. Also they say their radiator part will fit 120mm case fan openings better than the previous model. I know some people complained about that when fitting it to their case intake/exhaust holes. And they made sure the mounting bracket fits all newer and older Intel & AMD mobos.
Basically its an improved H50 model in square form. Improvements are good though so its nice to see Corsair is trying to improve an already good unit. What I'm really curious about is a direct performance comparison between the H50 and the H60. Throw in the Antec version as well for good measure.