With one small piece of information the meta of the WHFB just experienced a seismic shift.
The information that we have on Wood Elves says that the Lore of Athel Loren is gone and in its stead the Weeds have access to the eight Lores plus High and Dark. A small change? Not bloody likely. This is a significant shift.
Why do I say this?
Well suddenly with access to previously out of reach Lores the Woodies become scary. Very dangerous indeed. Prior to the change they had no way to deal with armoured opponents - well they did but it was largely character driven and situational. Now your Spellweaver can take Metal Magic to do the job. Searing Doom looks a great choice for prime Mage but especially good on a secondary wiz.
Look at he synergy with Shadow Magic. Not only do you get Pit. You also get The Withering which when teamed with Strength 4 bows is brutal and the old favourite Mindrazor should the enemy get to contact.
The bowline now looks scarily viable. No-one will want to play 60+ archers backed by Shadow.
Mark my words there will be horror stories in the first few months post book release as the access to new Lores ramps up the effectiveness of the WEs.
This change alone has shifted the meta.