Thread:ADour/@comment-1713281-20141204030016/@comment-4651179-20141204082429

Considering the design and some descriptions, it's the Extremis Armor.

It has happened other times that suits have been given different and more complex names (the Bleeding Edge armor is given the name of "Stark Enhancile MK X" in the cover for Iron Man #500, as an example). But in the end, we use the "Iron Man Armor Model Blah Blah" naming because it's more simple, it's given by the handbooks, and helps order the armors.