Lich Typo OP or XP bost needed?

As the Lich is written in the 12/17/12 playtest they are LVL 7 but can cast as if they were LVL 20. OK it's only 4% on a roll but this seems OP in the event it happens. So should one boost the XP to go with the insane increase in power, or is there a typo? 
It seems like the Customization Options are all increases in power that don't have XP adjustments. I'm guessing they'll eventually include XP boosts for them, but included them in this packet to test out how people like optional modifications to monsters in general.
there are some cases where if you follow customization options, the XP value increases. so i think they just didnt add this to all of them
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