I personally do not have any clue about this coming single, but since this article got the single name/release date and tracklist... so maybe worth for a post?
濱崎步新歌玩字頭哄長瀨
07/05/2007
樂壇天后濱崎步將於9月25日發行的新細碟《T》，似乎有意獻給男友長瀨智也。步姐出碟素來愛玩暱稱，過去 推出細碟《A》及《H》，都是步姐姓名的頭一個字。以此推斷，「T」是長瀨智也的名字字頭，加上唱片收錄《 First love》、《JEALOUSY》及《happy Day》三首歌，難免令人懷疑步姐憑歌寄意予男友。
source :
http://the-sun.on.cc/channels/ent/20070507/
translation : Japan diva Ayu will release a new single on Sept 25th, T. after the "A" and "H" singles, named with her own initial, this "T" should be for her bf :p single tracks including "First Love", "JEALOUSY" and "happy Day"
(lock if old or move it to chat section *__*)