Seems the PB is broken up by pairs/trios!! Yay! There were a couple previews on HPC today
Erika/Maimi (already known from previews)
Saki/Airi/Kanna (kinda known from previews above!)
Chisa/Mai
I can't wait to see the Chisamai pics because they're an awesome pair
From the previews, Erika/Maimi's look pretty awesome, too~