On December 19 (Fri) ,2008, Malaysia made the notification on the completion of its legal procedures necessary for the entry into force of the Agreement on Comprehensive Economic Partnership among Japan and Member States of the Association of Southeast Asian Nations (Japan-ASEAN Comprehensive Economic Partnership Agreement).
With this notification, the Agreement will enter into force on February 1 (Sun), 2009 in relation to Malaysia.
This Agreement has already entered into force among Japan, Singapore, Laos, Viet Nam, Myanmar and Brunei.
Japan - Malaysia already have bilateral FTA, however Japan-ASEAN FTA is helpful for getting product origin by using accumulation provision. This will be certainly useful for trades who have operations in ASEAN countries.
(Source: http://www.mofa.go.jp/announce/announce/2009/1/1186812_1126.html )