From Ted Purdy on Twitter. Cavity design is similar to the S55 irons (but deeper) mixed with a little TaylorMade Rac. From what I've heard the head shape is basically the same as the i E1 irons but with the same finish as the Glide wedges and iBlade irons. The 6-iron (maybe the long irons as well) don't seem to have the tungsten weight on the toe that many of the previous models did.
Looks cool, nice "clean tech" look and the style seems to match up well with their wedges, iBlades and even Vault putters.
Non-PING, no up charge shafts are going to be DG, KBS Tour, Pro Modus Tour 105,