Hmm.. I think she posted a pic of a shirt with 8 things on it? Anyways I dont think its a secret that Taeyeon and Jessica didnt get along?
Still there: https://instagram.com/p/w0x0shn_q5/
Taeng solo <33
Promotion time seems to be limited to 3 weeks, then she will do her solo concerts.
Also her style is no Ailee's, so a "usual" ballad, soft sound, will most likely to be the promoted song.
But I hope there will be some good mid-tempo and upbeat songs in the mini.