We live in the Second Age of Space Sims, it seems, between stuff like Enemy Starfighter, Elite Dangerous, and even the highly ridiculous Star Citizen.
So perhaps it isn't surprising that their distant cousin, the fighter sub simulator, would be coming back. A relatively underrepresented type of game, its primary standardbearer was the series that began with the Wing Commander 1/2-looking Archimedean Dynasty, continued with the WC3-looking AquaNox, and finally ended with AquaNox 2: Revelation. Other notable entries included Sub Culture (underrepresented but fun) and Subwar 2050.
AquaNox, it seems, is coming back. At least in spirit.
Go take a look.