We’ve been patiently waiting for this one.
Toonami has announced that they have picked up the rights to the English dub premiere of Sword Art Online Alicization and will premiere the series on February 9th with a one-hour series premiere only on Adult Swim @ 1230. Previously, the Alicization arc was only available with English subtitles on Crunchyroll and Funimation.
The third season of Sword Art Online, titled Sword Art Online: Alicization, is an anime series adapted from the light novel series of the same title written by Reki Kawahara and illustrated by Abec. It is produced by A-1 Pictures and directed by Manabu Ono. It covers the “Alicization Arc” and adapts from the novel’s ninth volume, Alicization Beginning, to the eighteenth volume, Alicization Lasting.