To commemorate the 20th anniversary of the One Piece TV anime broadcast, the franchise's official website announced on Saturday that the Romance Dawn one-shot manga, which is considered to be the origin of the One Piece franchise, will get an anime adaptation to broadcast on the anime's birthday, October 20.

Romance Dawn was released by Eiichiro Oda in two versions in 1996: one was in WJ Summer Special magazine which was later included in One Piece Red. Another was in Weekly Shounen Jump magazine, which was later included as one of the short stories in the Wanted! collection. It describes a different Monkey D. Luffy from the One Piece franchise. The WJ Summer Special version previously received an OVA adaptation in 2008. The news described that it will be the first anime adaptation for the one-shot, which refers to the Weekly Shounen Jump magazine version.

Source: One Piece.com