Alright here's a quick and brief summary of the lores:
Beast is good. Attribute = +1 A/S on a character within 18". Wyssans wildform is still a thing like most other spells in the lore. However we can now five frenzy to a unit and turn a chariot or monster around. Nifty. The uber spell have been changed. Regular version = buffs the caster with various nice stuff, boosted = buff a character. So hello super buffed oldblood especially because you add the attribute.
Life is almost exactly the same, however you can now place a forest. Attribute is the same.
Light is not good for us anymore. Not in the same way. Attribute haven't been accounted for. The +10 WS/I is still there, signature spell is a buff that gets better every time you cast the signature on the same target (light counsel). They added a damage spell I believe. Banish is the new uber spell. Overall not that interesting for me.
Fire is your go to damage battery. All spells except one deals damage and the attribute is D3 S4 hits. Uber spell is actually useful. One buff = +1 To Hit and flaming magical attacks.
Death is not longer your favorite sniper lore. Attribute = enemy take another wound (ward allowed) and if he lose a wound the casting mage gains one. Purple sun got hit hard with the nerf bat, unlike dwellers. Lots of new thinks in death.
Shadow got hit as well. Attribute = -1 WS/M/I on opponent. A lot of spells for changed in the lore, uber spell = you auto wound, another spell where you can place an impassable terrain piece and nifty stuff like that.
Heaven is exactly the same except attribute. Attribute = reroll one power dice of your choosing. Comet and chainlightning got changed around, but are still good.
Metal is the real winner for us in my opinion. The 8th edition attribute is now a special rule and the new attribute = +1 armour. A new spell allow you to choose any weapon you want so saurus warriors can gain flails or great weapons and still be at armour save 4+, however you don't have the parry. Templeguards can be boosted to 3+/2+ save and so on. In fact you can give rippers a 3+ save and the skinks something interesting like flail. Just for giggles. Most spells are the same although glittering rope is now. +1 scaly skin and -1 To Hit.
High magic appear to be the same, even the attribute.
Overall the magi meta should change. I can see people bringing lvl 1 heaven mages just for the reroll. Death os obviously nerfed. Metal got a healthy bump, same with fire and beast. I think there'll be new go to lores, but the overall playing field appear to be more equal.
