As always the EqD had unconfirmed information of this back on 10/09, but here it is in digital black and white.
Also if you got confused about the times, the episode today airs at 9am EST.  Next week is when the episodes will start airing at 10am EST.  I’ve seen a few confused souls wandering around.
  • Anonymous

    It's because Rarity knows that SB isn't actually her sister.