Mass Effect 2 - Blog, Weapon Updates and Steam Preorder

I'm going to collect a handful of Mass Effect 2 items together.  First, Christina Norman has penned an entry at the Bioblog titled Enemy Defenses in Mass Effect 2:

One area we wanted to improve in Mass Effect 2 was enemy power resists. In ME1 enemies would sometimes resist your powers, but it wasn’t clear when they would, or why. More importantly, if your enemy was resisting your powers, there was nothing you could do about it.

For Mass Effect 2 we’ve combined enemy resists with defensive shields, armor, and barriers. These defenses are displayed in a bar over the enemy’s health bar. As long as the bar is visible, your target is resistant to powers, but all powers deplete his defense bar. Once the defense bar is gone, he is vulnerable to all your powers. Only powerful enemies have a defense bar, weaker enemies are always vulnerable.

At the official site, there's an Arsenal update for the Grenade Launcher and Shotgun and Steam preorders are offering a bonus "Inferno" in-game armour.  No doubt other vendors will be offering different bonuses, as with Dragon Age.