After seeing this post I went to ANN and found this update:

#13: "HANEY" by dream (eps 179-)
#13: "Yellow Moon" by Akeboshi (eps 179-)


Seems the guys at ANN has 2 different songs and groups for the ending of ep179.
Which one will be the chosen one? We will have to wait.
Who will surivive?!?! dundundundaaah