From buffed interview
buffed : Worgen and night elves have disappeared from Stormwind on the PTR. Will they live in the Emerald Dream from now on?
Katherine Bankson: It's potentially one of the new havens for the night elves, but I wouldn't say it's their only home. It's certainly a place they can call home, but it's not the only place.
The night elves have experienced a number of tragedies over the past 10,000 years and have often had to look for a new home. They hope that they will find peace in their dreams and will not have to search for a new home again. For us, Amirdrassil is a place where you can rest until you find something new.