This is a new way into uninstanced stratholme and to Quel'Thalas for any class using the puntable marmot and growth buffs. Only other way I know of to get in currently is with a mage and possibly a druid because of blink.
Quel'Thalas was made much harder to reach because flying under the world was fixed but you can get there using this. Getting to Quel'Thalas was my main goal when doing this and through Stratholme I knew was the only way I was going to get there with all those barriers around WPL, EPL, and Tirisfal. Im lucky that the marmot went through the barriers there, as it did not go through any up in the mountains.
Enjoy
Dont forget to watch in HD!