^Seiko releases singles again. The last one is Lulu that was released yesterday:
http://www.cdjapan.co.jp/detailview.html?KEY=UMCK-9618
mizuki-7: you made a mistake in the first post. A Girl in the Wonder Land'll be release on 2013/06/05. The 22nd May is the release date of the single Lulu & the date on which the new about the new album was posted on her official website.