I really think they should stop calling everything Super light / ligthweight when it isn't. I mean, for a full out aero frame it is not bad, but superlight is not what it is. Furthermore, the weigth is mentioned for the babysize triple xs. Average size (52 / 54 / 56) will be a bit heavier, making it go to 1100/1200gr probably. [edit] fair enough, as pointed out below, size S is closer to 52, not that small, but still not lightweight by any means [/edit]
The seatpost/sadle clamp looks different. Not sure whether I like that, but visually better than the TT-style sliding rail (like the x38 foil-clones).