In issue #26, Tony introduced Askew & Stark's Synth-Kinetic Interfacing Nano-Fluid at the Tek2K convention in Miami. This S.K.I.N. is basically supposed to be a super-efficient armour coating (in this demonstration, it was put around a basketball, and the ball could still be used as a basketball, with no loss of elasticity.) supposedly nearly as durable as adamantium (personally, I hope that this little bit of hyperbole is just that - hype. I would hate to think that a synthetic creation of Stark's could indeed be as indestructable as adamantium. Remember, even that adamantium/steel alloy is fairly weak compared to the real thing) and came with anti-gravity units! (not available on all models)
Presumably, this could lead to the next generation of Iron Man armours.