Hi Chris!
I have loved all of the additions to the New Fantasyland and I am very excited for the opening of Fairytale Hall as well! So far there hasn't been an announcement regarding an opening date other than sometime this fall.
Here's what I'd recommend: Keep your eyes on the
Disney Parks Blog for an announcement regarding the opening date. You can subscribe to their daily emails so that you'll be notified of new blog posts with all the latest exciting news. If you're on twitter, be sure to follow @DisneyParks and @WaltDisneyWorld. You may want to look out for #fairytalehall on twitter as well. You can also keep your eyes on the official
Walt Disney World Facebook page. And of course, you're always welcome to check back with us a little closer to your trip.
I'll keep my fingers crossed its opened before your visit so that your little princesses can meet their favorite princesses there. I'll be visiting again in October too and would love to see it opened!
Please feel free to visit us with all of your planning questions. We're hEAR to help!
Wishing you minnie magical memories :-) Allison V.