Calm down. Blizzard has performed a bit of a retcon here. Until NOW, Worgen have ALWAYS been said to have come from another dimension. Read ANY piece of lore-related writing about them - OTHER than that paragraph that everyone seems to love quoting - and you'll see that lore dictated that Worgen were, in fact, from another dimesion.

I use the term "retcon" loosely here because A)I don't think the word and what it implies (that Blizzard has no control over the story THEY WROTE about a universe THEY CREATED) and B)It's not reeeally retcon'd. The origin of the Worgen has always been steeped in a bit of a mystery. The only thing that is for sure known is that they were from SOMEWHERE. Or even some"when". The way it's looking, and this has been implied before, is that the Worgen were in cahoots with the Night Elf druids a looooong time ago and are linked to the elves in some way. They possibly could even be linked to the Emerald Dream, being corrupted alongside it, becoming bloodthirtsy and savage. hey may not have been summoned from another dimension, but from another time, making a sort of horrible time paradox/loop thing.

What I'm TRYING to say is for you and everyone else who INSISTS on quoting Blizzard's Worgen page, smug and certain you've caught WoW.com in a lie/mistake, do your research. The origins of the Worgen have always been shady and, until now, was believed to be another dimension.