It only seems fair after reviewing some Kre-O' microfigures we look at Legos.
Lego's Micro Minifigures are not new. Lego has been using them for their board games for a while now. But I think that with the release of the SHIELD Helicarrier it might be the first time they've been put to use in a regularly released set. I'm sure some other Legophiles out there can confirm or refute this.
Like I posted before with my look at the Jumbo minifigures, having a smaller scale minifigure also makes sense, especially with a large set like the Helicarrier where it would be prohibitively large to have it at the normal minifigure scale.
These don't look poseable, but I could be wrong on that too. It'll be interesting to see what kind of collectablility this guys have. As a big fan of Ironman I wouldn't mind adding the Micro to my collection, but I doubt I'd pay the premium it'll cost coming only from such a large, expensive set.