They might be trying to do something similar to the Extremis storyline, but I don't think they're going right back to the angular uni-beam design that's so iconic of the Extremis Armor from the comics.
The little you can see of the design so far sort of looks similar to the Bleeding Edge Armor from the comics. Again, more pics of that armor that were posted up on comicbookmovie.com:
Whatever the final design, it'll probably pay tribute to some past designs from the books, but should be somewhat unique. Man, still almost a year away...