Anime Expo had a special trailer release about Sword Art Online Alicization. The 3rd season was paused half way though, with two cours left, about 25 episodes, Sword Art Online or SAO for short will pick up on the War of Underworld Arc.
SAO Alicization is playing currently on Toonami and is available on Crunchy Roll and Funimation. Normally after a season we have to wait a year or more for another season of an anime but this is a continuation of the same season. Unlike Attack on Titan this was a plan Break while Attack on Titan was having issues do to what was happening in Japan at the time.