Personally, I love this. I still use my Dimensional Ripper and Wormhole Generator to go hopping around the lands of the old expansions whenever I'm messing around with things, and being able to flit around Pandaria will be amazing as well. (Yes, there's a new Wormhole Generator for Pandaria, but it apparently only takes you to a random spot in the continent, which isn't as helpful.)
For more details, port over to Wowhead News.
It's open warfare between Alliance and Horde in Mists of Pandaria, World of Warcraft's next expansion. Jump into five new levels with new talents and class mechanics, try the new monk class, and create a pandaren character to ally with either Horde or Alliance. Look for expansion basics in our Mists FAQ, or dig into our spring press event coverage for more details!