Okay, even if they don't do it, which looks likely, it would be jolly nice of 20CF to release the final reiteration of the script before it got shelved. I think a lot of us would be happy with that as I guess it would have been considered cannon if it had got made and would make an interesting read.
It's likely Fox liked the script. Good things were said about it by everyone who may have been involved. A script that good doesn't just get handed out as consolation. It ends up being integrated into a new work. If the main thrust of the plot can be reworked to accommodate alternate characters, then this may yet happen. Blomkamp's 'ALIEN' movie may yet still be made. It just may not feature the Ripley, Hicks and Newt trio.
I'm still thinking Blomkamp is a good choice for a director and absolutely nothing is known about the followup to 'ALIEN: Covenant'. It wouldn't surprise me if Scott hands over the reigns to direct the next movie to Blomkamp and we see significant content from his current script find its way into the next movie.
If Blomkamp's script is as 'gangbusters' as people claim it to be, then I believe that's a reasonable outcome.