Harebrained Schemes posted up the 3D renders for their Valkali colossus for Golem Arcana over in their Kickstarter campaign.
From the preview:
You were warned she was coming. That she would arrive today. Did you hear the cries of your comrades as they ran from her? Did you see hardened warriors dropping to their knees, weeping?
She has come.
Behold, the Gudanna Valkali Colossus!