Assuming you're still hooked into the Cerberus Network, you can look forward to some free downloadable content for Mass Effect 2 tomorrow. Both the Xbox 360 and PC versions are getting "Cerberus Assault Armor" and the "M-22a Eviscerator Shotgun."
As far as stats are concerned, the armor increases heavy weapon ammo capacity, shields, and health by ten percent. As is the case with all of Shepard's outfits, I'm going to pass so long as the helmet stays on at all times. I'd never want to miss seeing his wide range of facial expressions.
The shotgun is supposed to pierce armor and be effective even at longer ranges. What else can be said? It's a gun; you point it at people that you aren't particularly fond of. Personally, I'd rather do one-hit kills from far away with a sniper rifle than risk running up close with a shotgun for a similar effect.
Still, free content is free!