The 1 - 60 XP should not be the issue. You do the questing in yellow/high green and it's easy to level to 60. It's the 60 - 70 that's the pain (literally double what they should have been) and it also asks the question about how they'll handle levelling from 70 - 80 come Lich King.
But all I did hear was 1. +30% XP from quests and 2. It won't be done until Lich King. Like people said before, they have no reason to implement it before Lich King.
I leveled a warrior from 1-60 in 2.5 to 3 weeks..don't remember...using Joanna's horde guide. To me its all kinda boring but using a guide I don't sweat missing stuff and you are never grinding...well maybe once or twice for half a level.
Plus I had my 70 priest on a different account and out of group. It autofollowed and I just pressed the renew button and never had down time. I could do elite quests and I'd cleave/whirlwind groups of mobs.
I have a mage that I'm gonna get to 70 one day on rest exp...I just have my priest spam flash heal while I gather up mobs and AOE them. Full experience cause priest is out of group. only 36 atm tho
ya im using that now on a druid.... waay easier and less thinking