Zombie Studios CEO Mark Long confirmed that they've begun production of Blacklight: Tango Down 2. The sequel will feature larger maps and controllable mechs and is to be finished by next summer.

The downside of this all is that there won''t be any DLC for Tango Down. Zombie's post-release support is going to be limited to bug fixes. All available resources are being directed toward a more ambitious sequel.
So make sure to give the first part a try because the sequel will be out before you know it!