Does anyone know if the grim hammers are gonna get a buff anytime soon i feel like if they dont the army of thror will stay dead. They have potential to be really good I think, I would be happy if they made them the same stats as Iron Hills dwarves with mattocks. Thanks

This actually came up at the Q and A at Ardacon. The defence was the issue and when there is an update I fully expect it to be increased to bring it in line with other dwarves. As to when, who knows, but this will probably happen at some point.

As Teacups17 has said, the question was raised at Ardacon. There was a quick poll done, with a resounding agreement for change, ending with it being likely that things will change at some point to make them D7. (As well as an unrelated question implying that throwing weapons could well lose the movement penalty - these combined would make Grimhammers more worthy.)