Has anyone made a Mass Effect setting?

You're in for a treat ^.^

There are a few, but Singularity posted above is definitely my favorite!

I've collected a bunch of them for both Genesys and the antecedent EotE/AoR/FnD variants (most of which were basically species only with the Force as special powers) and I agree Singularity is the best by far. If you wish I can dig up links to the various others I've found, but I'd recommend sticking with Singularity or using that as the starting off point for your own Mass Effect Hack.

Is there still work done on Singularity?

I've found no indications or further posts from the main team, but there is at least one thread I've seen on further modifications, stat blocks, and suggestions for running Singularity based on actual play experience. It has some pretty good commentary, but nothing like a full next version or sub-hack.

https://www.reddit.com/r/genesysrpg/comments/at8fof/running_a_mass_effect_game_using_singularity/

Thank you very much! I would like to see the new species from Andromeda and the vehicles / adversery section when the new supplement is published.

Some very good points are raised in the discussion.