From the spell changes leaked in the alphabuild is pretty clear blizzard has something in mind about arcane.
The most notable change is the one to Arcane Missles wich are no longer proc based and mana free and seem to be even cut out of the arcane charge system, they are also already changing some talents here and there and adding a baseline proc based clearcasting ability.
So, What do you mages think about this?
P.s. I'm quite new to this forum so forgive me if I didn't add links to the spells, I would be glad if someone would teach me how to do that for the future