Main page says:
ARCHY IS BEING COMPLETELY RE-WRITTEN
The old codebase was showing its age, so I'd been wanting to do this for awhile. With WoW 8.0, however, Blizzard forced my hand by completely replacing the map subsystem and API.
To reiterate: Archy is not dead; it's being worked on.
But after 2 and 1/2 years I believe it is DEAD!
Aww, it’s only been 2 years!