A jihadist Web site posted a banner Monday announcing a new al Qaeda video calling for battle.
The video is titled "Al Nafeer," an Arabic word referring to the horn that is blown before war.
One terrorism expert said the video will likely contain an address from al Qaeda's leadership.
This new banner comes just a day after jihadist Web sites released an almost two-hour video featuring al Qaeda's No. 2 man, Ayman al Zawahri.