Unless otherwise specified, I'd assume anything would stay the same as it is this age.
BTW, lore-wise Dwarves aren't inherently anti-magic, and it doesn't matter anyway because lore is what the devs want it to be. I still think Dwarves should lose their free building and rushbuild penalties, and get reduced build costs and building destruction immunities in their place. Dwarves having free build has created balance issues ever since it came into effect many ages ago, and not being able to rushbuild is a strong penalty. Something along the lines of what I proposed in my thread would be more interesting to play with, giving dwarves another support penalty but a lot more durability on their buildings and the possibility of using rotator building strategies.
I don't see anything in the current changes that would encourage warring at the top - top still has every incentive to NAP with each other because dicing hasn't been weakened. Of course the top could ask themselves why they would agree to such generous NAP and notice terms in the first place, but it doesn't change how powerful dicing is as a means of growth compared to everything else.