Official Hatis-san's tweet from 10th of august!
おわったぁぁ～！ヴォーカルRec全完了！！早くみんなにお聞かせしたいわぁ～(* ´ v `*)告知解禁までしばしお待ち下さいませ…♡明日からは撮影で大阪に帰ります～♪ http://instagr.am/p/OJSJHOggIL/

We've just completely finished recording the vocals!! I want to tell everyone asap ～(* ´ v `*) But please wait a bit longer until the info ban is lifted …♡ Tomorrow the filming goes back to Osaka～♪

Sooo, we can already begin to wait for the group to make an announcement... )