To summarize it:
*There's a new area near Kerning City. It looks like a candy land.
*Knights have better survival with their new "Iron Shield" skill
*New element skills and buffs for Wizard (Ice Strike)
*Quests give more rewards
*Boss HP bars will show more info such as debuffs etc
* New NPCs and hairstyles
*Lastly, a silhouette of new monsters