Its a reference/tribute to one comic if I recall right.
Oh, so they told what they are up to next already, sounds amazing!
I will throw my money at them as soon as they present anything. Just wish they made that alien source book, oh well one day!
Also yes: they have done a such superb work on the lore, tying and referencing to dark horse comics and games and books, and made a lot work, its first time I see like 99% of us fans liking it and agree on its lore. Showcase of how to do the lore and franchise right.