Board Thread:Spoilers!/@comment-31937823-20180405010135/@comment-25733960-20180506075855

In that pic she is wearing the same dress and the same hairstyle Serum Queen wore in 6x21/6x22. So, that confirms the Serum Queen will appear

We will see Roni Regina for sure, because of promo pics and well.... logic

We don't know yet, but it's a safe bet Regina Mills will also appear

What we don't know is if the W!EvilQueen will appear or not. Fans think she will, because the Evil Queen's carriage was in Storybrooke