Blizzard blue has announced that it will soon be possible to solo some of the old world instances, where before a team was needed. Basically another change to help the old world content, and while the responders on the forums will say its to cater to the casuals, this actually caters to everyone. Nice change.
We’ve made some changes to several dungeons to allow easier access for players in the upcoming patch.
The ritual objects that used to require 3 players to activate in Blackrock Spire and Uldaman now only require 1.
You no longer need quintessence to summon Majordomo Executus.
You no longer need the Scepter of Celebras to teleport to the final section of Maraudon.
You no longer need the Mallet of Zul’Farrak to summon Gahz’rilla.The Scepter and Mallet both turn into actual weapons.
Daelo
Lead Encounter Designer
So get instancing folks, all the more reason to help those alts, or get the achievement points.
TyphoonAndrew's - Eye of the Storm 
I’m kind of excited about this actually. It’d be cool to check out the old world instances. Since everyone’s focused on the newer content (which is as it should be) it’d be almost impossible to get a group together for the most part.