Well, it's coming back to an internet near you this summer.

http://www.youtube.com/watch?v=76abFui4lx4

They're taking signups for Closed Beta testing right now with Open Beta coming soon. The game will be F2P with in-game items purchasable through micro-transactions much like World of Tanks.

Go to http://mwomercs.com/ and sign up.

Looking forward to pwning...er, seeing you on the battlefields of the Inner Sphere.