Because there's a new Mechwarrior game on the horizon, people will for the first time in years have Mechwarrior on the brain. To help you get your fix, then, Mechwarrior 4 is going to be re-released. For free.
How it holds up after all these years is anyone's guess (I'd given up on the series long before it hit a fourth instalment), but hey, it's free. No word on just when it'll be released, but we're promised it'll be "soon".