I have already made an "Issue" on their Issue page with 2 files containing all info on the new Rare's in Darkshore as I added them myself (Needed the info for my own Addon so I implemented them in NPCScan while I was looking for the data for my own Addon).
Here is a link, if you know how to add stuff to Lua files you can add them yourself with the data in my post.
It's been quite a long time since last update. Is this dead?
Of course it is. Torhal hasn't updated any of his mods in nearly a year (or longer) and isn't responding to communication attempts.
FYI the latest update of NPC_scan was 13 September 2018, that aint a year yet ;), also he's been working on Ackis Recipe List +modules that has a release version from February (and Alpha from April) this year so it's not like he's been doing nothing and i'm sure Torhal also has other IRL obligations to consider then just wow addons.
BUT, i can fully understand the feeling that it is taking awhile for new releases to come out ... , so far most 8.1+ Rare's seem to be included in the latest version but i always wonder if a phew are not lol ^^, anyway i really hope that for patch 8.2 we will be getting a new version because the new Nazjatar and Mechagon zones will surely have new Rare creatures that i highly doubt are already included (or pre-coded).
on another note, i'm also hoping the long awaited "rewrite" of NPC_scan overlay will be done as well :), now that one you can say it's been more then 'awhile' xD