Threadbare:
Saw these guys on ebay 1st and thought the new ones were conversions. After a minute of digging I found them on the macrocosm site.

Dark Dwarves Archives - Macrocosm
Some old stuff sculped by Sjoerdo with new stuff by not sure who. Either way it all goes well together. And in their recent news they say that they have plans for more.
Zanko:
Some of these models are formerly part of the Hasslefree Range of “Twisted Tales” Dwarfs.
Now they are no longer on their website, so I presume Kev sold the range to Macrocosm! :~
:hashut
gIL^:
They were removed from the site…
gorgarrak:
The molds are being remastered according to their Facebook page, with new evil dwarf releases coming soon