It appears that Kevin Bentley (kevlar) and Jeff Sutter recently continued working on the 1.5 patch for Descent 3 again.
I know that people might have "various opinions" about this. And I know that not all of these opinions are positive.
Anyway. I am VERY happy about this and consider it as brilliant news!
With a final confirmation from Matt Toschlog, that he'd be fine with Kevin's patch ambitions:
At least another chance for the patch - after all those yearsMATT TOSCHLOG, DESCENT 5 points 3 days ago
As Kevin said, he and Jeff Sutter are working on it, so I'm hopeful we'll have a 1.5 release soon.