Wow! So fresh topic with people, interested in They Hunger remake 
OK, I have small information for you. Me and my team are currently working on They Hunger remake on Source engine. It looks much better (IMHO), than other attempts of remaking this mod. Below you can find links, where you can read more about subject:
http://www.moddb.com/mods/they-hunger-again/
As for me, I don't believe in some progress from Black Widow Games. Maybe they haveAny faced an unexpected financial or development problems (on new engine), so decided to leave mod aflot. One strange thing—is their strange dissapearing.
Anyway, currently we hard-working on this mod and hopes to publish it within some adequate time period.