That's a refurbished Mechwarrior 4 for free, you understand. The chaps over at MekTek have been working on this for a while, and it seems that they've finally done it:
If you've been following the drama surrounding the free release of Mechwarrior4, than you would be aware that the initial announcement, made last summer, was a bit premature. After nearly a year since the announcement came, MekTek Studios is pleased to announce, that Microsoft Legal has given the all clear for the free release of Mechwarrior4. This hallmark movement by Microsoft Games couldn't come at a better time, as the Mechwarrior community is attempting a rebirth, amidst announcement of a Mechwarrior Reboot. Thank you Microsoft.
Thanks, Microsoft. No release date yet, but hopefully it'll be soon. (A new commercial Mechwarrior game, you might recall, has already been announced.)