Old news by now, but since most of the population seems oblivious, a new season of Full Metal Alchemist has been confirmed in volume 20 of the manga.

Supposedly a minor slipup occured in regards to a possible sequel at Anime Expo 2008. A couple weeks later, papers surfaced online listing staff members of BONES studio working on a new project. Most notably listing Yasuhiro Irie (Full Metal Alchemist Animator) as the the Director for "Fullmetal 2."

Shortly after, Mashahiko Minami President of BONES denies the authenticity of the papers, stating that a full internal investigation would ensue.