Thoughts? Concerns? With the caliber of villains we will be seeing in Iron Man 3, it makes sense to see a change in Tony Stark’s weapon of choice. According to Wikipedia, the Bleeding Edge armor is an upgrade to the Extremis where, the armor exists within Stark himself.
A more detailed description from Wikipedia follows:
The neurokinetic user-controlled morphologic nanoparticle bundles that form the suit reside in Stark’s body, and form a fibrous wetweb of iron and platinum, that can be commanded to form any type of structure upon Stark’s skin, such as large boxing gloves,or weapons, including large guns extending from his armsor a lightsaber-like energy sword with which Iron Man was actually able to harm one of the Worthy during the 2011 “Fear Itself” storyline. The nano-machines can even mimic the appearance of clothes, and then dissociate to transform into the Iron Man armor whenever Stark wishes. The suit adds less than twenty-five pounds to Stark’s body mass, and can stop a howitzer shell.
via [Bleeding Cool]