If you love Kirin'Tor bling, you'll be happy to note that their transportation rings are getting an upgrade. Should you purchase one, you get a free teleport to Dalaran once every hour.
The Hearthstone that you've carried with you since you day one, unless you deleted it and had to bribe an Innkeeper for a new one, is changing radically. The cooldown is being reduced from one hour to half an hour. This was done partially to appease the whining over nerf to ghetto hearthing.
Ghetto Hearthing is/was the process of dropping your group while in a dungeon and waiting one minute for a free hearth, provided your hearthstone was on a cooldown. In 3.1, you will no longer be able to do this. Fortunately, you can still use the method to get yourself out of a dungeon.
Ghetto hearthing will be less of a hearth and more of a shifting of your virtual person to the nearest graveyard, alive and well. This will stop people from doing things like entering Ragefire Chasm while grouped, dropping, and getting a free hearth.