About four days ago. See the Grim Dawn V1.1.2.0 Preview.
Is it because the patch itself is coming soon, rendering the preview irrelevant? 
I just wanna pierce the heavens with my AAR drill laser so bad…
Patch is on GOG…but not Steam. No need for preview anymore. 
Guess so
https://www.grimdawn.com/forums/showthread.php?t=83649
Said it was rather obvious why the preview thread was closed.
self face-palm