Kotaro Yamada, the artist of Sword Art Online: Phantom Bullet, has been announced to also work on the 4th narrative of the original light novels created by Reki Kawahara called Sword Art Online: Project Alicization.
The arc "Alicization" (アリシゼーション編) takes place in the 9th volume of the novels and is said to be the longest of the series.
The light novels were originally published in 2009, written by Kawahara and Illustrations by Abec. Along with this manga adaptation, there are also a blitzkrieg Anime adaptation releases planned for 2017 consisting of a Sword Art Online season III plus additional OVAs episodes along with a full length feature film.
Yen Press has also acquired the license to publish Kawahara's original light novels and respective manga adaptation series, which includes:
Sword Art Online: Progressive (novel & manga)
Sword Art Online: Aincrad
Sword Art Online: Fairy Dance
Sword Art Online: Girls Ops
Sword Art Online: Mother's Rosary manga.