Even this long after the name change, I'm still not used to calling it Iron Brigade. The game formerly known as Trenched will be making the waltz over to PC on August 13, 2012, Double Fine has announced. And yes, it'll be available on Steam.
As a reward for your collective patience, this version will include the "Rise of the Martian Bear" add-on at no extra cost. That's about all we know right now, but there are a few screenshots to glance over in the Double Fine blog post. In other Iron Brigade news, the Xbox Live Arcade version is discounted to 800 MS Points.
Whichever platform you get the game on, make sure you have some people who can serve as loyal co-op buddies. That goes double for the aforementioned expansion content.