WOW TBC Rested XP : World of Warcraft General Discussions

For those still wondering about this, Nethaera from Blizzard gives a good explanation...

If you are already level 60 and have been for awhile, you will not start with rested experience. However, as you begin to level from 60 to 70 (provided you have activated the Burning Crusade expansion) you will begin accumulating rested experience again the same as you normally would. So if you've been used to camping out wherever and whenever, you might want to work to break that habit and start camping out at Inns again.

The accumulation of rested xp is the same however as far as the time to get from 60-70, that is variable depending on playstyle. Someone that plays a lot is going to level faster than someone that doesn't depending on if they are soloing, grouping, doing dungeons or spending their time PvPing. Different people play differently and there is no way for us to say how long it will really take since it will take different amounts of time for everyone.

Thanks