I'm hoping for the new single too! I'd love to hear the group do a Berryz song (Yuujou Junjou Oh Seishun, Jiriri Kiteru, or Special Generation?)! I'd really love to see some T&C, MKB, W, or v-u-den too... MM oldies, too!
I'm just really really really hoping it's not all their songs... As much as I love just about all of them! Ooki na is definitely on my "I can't stand to listen to it anymore!" list... EVERYDAY YEAH and Sakura Chirari kinda too... But they'll definitely be part of the concert. They already have songs that appear everywhere, so I believe this concert will have Massara, Ooki na, Wakkyanai, Sakura Chirari (maybe), EVERYDAY DAY, and JUMP as definites, and then their new single Meguru and Bishoujo Shinri!
My guesses for solos are Maimai with Koi no Mahou wa Habibi no Bi or Futari wa NS, and Airi with some Ayaya song (Guesses: Love Namida, Your Song?) or Maimi with some Gocchin (Guesses: Genshoku, Yaruki?), and then Okai/Arihara in the same shuffled song with either Airi/Nakasaki, and then Maimi with Umeda? As much as I'd love an Okai solo, I really doubt she'll get one... One reason being that she won't be at one of the concerts... Arihara for the same reason.