There's an off-chance that if your characters are already above the experience cap, they may not gain extra spells/abilities intended for the official expansion. I mean, if a priest's supposed to gain Spell X when they reach level 38, assuming your priest is already at level 42, they might not get that spell since the trigger's gone off before the new code. This is just a guess on my part, of course.
To the Righteous belong the fruits of violent victory. The rest of us will have to settle for warm friends, warm lovers, and a wink from a quietly supportive universe.