All XP info has been updated for 5.3. Thanks to everone who helped!
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If you have a level 85 or 89 character, can you please post here with the max XP you need to level?
Hover over your XP bar. You'll see something like 50/100 (though the numbers will be much, much larger). The second one is what's important. The XP to level 85-90 was reduced by 1/3 in 5.3, and I need the current values for my addon Progress, which shows your total 1-90 progress as a percent.
Also, if you have a Wowpedia account, you could edit the info directly into the "Experience to level" page; otherwise I'll add it there myself so everyone can benefit.
http://www.wowpedia.org/Experience_t...level_by_level
Thanks!