Long ago, there was discussion about The Next Harpoon. However, given the ungodly mess that the current ANW/HUE versions are, I doubt that it will ever see the light of day. The best we could probably have hoped for was (another) warmed-over version of Harpoon being released as TNH.
Regardless, AGSI has their fate in their own hands. If they fix the games, folks might give them a second chance. So long as they pretend that the game works, potential customers will pretend to buy it.
There are other games in the pipeline. Global Conflict Blue 2 is another contender also suffering from a painfully long gestation period.