We broke level 49 last night. With Zul Farrak now under our belts, the only instances left for leveling are Sunken Temple and Blackrock Depths.
The leveling gravy train will end at 60, but that is also when the real fun begins. :)
Araydan- Prot Paladin Level 49
Lyara- Level 48 Resto Shaman
Malaura- Level 48 Fire Mage
Vixis- Level 48 Feral Druid
Still going strong and having tons of fun.