What does this information mean?
Talk to your new class trainer in which ever inner city zone of Qeynos they are.
If you are a neutral class (dirge/troubadour, berserker/guardian, fury/warden, warlock/wizard), then you can choose whether to stay your current class or switch to the other associated class.
If you are an alignment restricted class (e.g. paladin/shadowknight, conjurer/necromancer, etc.), then you must talk to the trainer for opposite alignment to your class.
All Mage trainers are found in the Concordium Tower in South Qeynos.
All Priest trainers are found in the Temple of Life in North Qeynos.
All Scout trainers are found in Arbos the Elddar Tree in The Elddar Grove.
All Fighter trainers are found on the steps to Qeynos Castle in North Qeynos except for Brawlers (Bruiser becoming Monk), who report to Khai Lightfall ( 770, -20, -375 ) /waypoint 770, -20, -375 in the Dojo in The Elddar Grove.
You will be asked several times if you are sure you want to be your class to confirm your choice.
Call of Qeynos general ability - replaces your Call of Haven (It's now changed to call to home regardless)
Completing this quest gives -100,000 faction with Exile
Finally rid of that blasted the Exiled suffix title
Possible change of class
IF your class changes, all of your spells/combat arts reset to apprentice 1
Loss of all class "fun" spells
Free Respec of all of your character traits, racial traditions, enemy masteries, specialized training (master 2)