The release will mark the 25th anniversay of Battletech, and the announcement of a new MechWarrior game in development at Piranha Games. For those that skipped it, Mech 4 was a very solid mech game, and well worth checking out. But hey, it's free, so I didn't have to tell you twice.
We're keeping an eye on the site and will update this post with download information when it becomes available.
Never bought any of the expansions, and with all the nostalgia going around and the mind blowing trailer, I've never had a better excuse to take a break from RL.