It is pretty compact and not so many changes are in, if you are only interested in the difference to the last one, I have the changes (which are marked red in the document) for your convenience:
Errata
Core RulebookUndead Armies, Touch of Darkness may only be given to a unit with the Shambling special rule.
Destiny of Kings
Rordin the Dwarf, change to Inspiring (Dwarf Army List only). He will only inspire units from the Dwarf army list.
Demon Lord Ba’el, Bane of the Mortal Kingdoms, He has Thunderous Charge (2) rather than Thunderous, and Charge (2).
Historical
Slings are range 30”.
FAQ
Q: In the Loot scenario, if one of my units is routed by shooting can the loot marker be placed outside the units footprint?A: No it should be placed entirely within the footprint of the unit.
Q: Can the Crystal Pendant of Retribution trigger multiple times?
A: No it will only work the once, when the unit actually routs. So if a unit is saved by Inspiring or Herja’s Judgement of Korgaan for example, the Crystal Pendant will not take effect.
Not so much isn't it? Happy gaming to you all!
So long,
Paradox0n