Titan-forge is showing off some heavy weapon platforms for their Metal Beards Kickstarter campaign.
From the update:
Straight from our forges, second warmachine of the Metal Beards, the deadly Iron Catapult! It’s in the final stages of design, but if you compare it to the Dread Cannon, you can see some pieces are still missing. But the Iron Catapult should be ready to fire in no time, so don’t despair!