Official site has the member list:
秋元真夏、生駒里奈、井上小百合、衛藤美彩、斉藤優里、桜井玲香、白石麻衣、高山一実
西野七瀬、橋本奈々未、深川麻衣、星野みなみ、堀未央奈、松村沙友理、大和里菜、若月佑美
http://www.nogizaka46.com/news/2014/06/15-japan-expo-1.phpAkimoto Manatsu, Ikoma Rina, Inoue Sayuri, Eto Misa, Saito Yuri, Sakurai Reika, Shiraishi Mai, Takayama Kazumi, Nishino Nanase, Hashimoto Nanami, Fukagawa Mai, Hoshino Minami, Hori Miona, Matsumura Sayuri, Yamato Rina, Wakatsuki Yumi
It's basically senbatsu.... they didn't half-arse and just send undergirls/2nd gen or anything... (no Matsui Rena though)