Volume 7 will be released in February according to this:
http://www.cdjapan.co.jp/detailview....=NEOBK-1067410
Searching for the ISBN gives this result, which seems to say the date will be 2/27:
http://www.honyaclub.com/shop/info/kinkan2_comic_k.aspx
I wonder if this will include the Amati storyline.