The official Sword Art Online twitter page has updated with the announcement that Sword Art Online: Alicization will premiere on Toonami on February 9 at 12:30 A.M. EST.
For those who are not aware, the Sword Art Online: Alicization anime is an adaptation of the Reki Kawahara and abec’s light novel.
— Sword Art Online (@SwordArtUSA) January 24, 2019
Hulu provided an official description for the anime.
“Where…am I…?” Before he knows it, Kirito has made a full dive into an epic, fantasy-like virtual world. With only a murky recollection of what happened right before he logged in, he starts to wander around, searching for clues. He comes upon an enormous, pitch-dark tree (the Gigas Cedar), where he encounters a boy. “My name is Eugeo. Nice to meet you, Kirito.” Although he is supposedly a resident of the virtual world – an NPC – the boy shows the same array of emotions as any human being. As Kirito bonds with Eugeo, he searches for a way to log out of this world. Meanwhile, he remembers a certain memory deep down within him. He remembers racing through the mountains with Eugeo as a child… A memory that he should not have in the first place. And in this memory, he sees someone other than Eugeo, a young blond girl. Her name is Alice. And it is a name that must never be forgotten…
Source: Sword Art Online Twitter