It took almost 10 months since we heard Mechwarrior 4 was gonna be re-released for free, but that day has finally arrived. You can grab it through MekTek now; it's a 1.7GB download.
Mechwarrior 4: Mercenaries will include all the original mechs and weapons of the game's first release, plus tons more contentand improvements. Run go get it through the link, where more details await.
Mechwarrior 4 [MekTek]