I feel that we wont see some Massive Runic (Magical) Flying thing. I think most army books now show really really big things that aren;t in any book, but are just there.
Bounds spells wont end things for me, but I think really going "runic automation" like things will make things a little too Warmahordes and make me not like it some much. BUT if it looked really cool and Dwarf then I might change my mind ( I keep thinking about Thunderwolves.... like the idea of dreadnaught like wolves, but not superhumans riding giant wolves).
Bound spells I can see happening, pay so much for a rune that contains a "spell".
Runic Automations and Golems ARE in dwarf fluff from 1st edd WFRP they are normaly guards for parts of holds, so I could see them coming onto the battle field as well. To be fair I could see a dwarf style drednought coming into being, seeing as Burlock Dammison has made himself an alcohol powered arm, I'm sure he could make the rest of a body.