While the Season 4 patch — including new character Kage — was released the night of Capcom Cup, many were underwhelmed with the amount of content available on the patch’s arrival. VesperArcade was one of them, citing the single character reveal and the sparse amount of changes per character at the beginning of the season.
However, in this video VesperArcade speculates on what content could be coming down the pipeline for Season 4, and when he thinks we may expect it. He also theorizes that Kage is not in a season pass, and there will be six more characters coming in a Season 4 pass to be revealed at a later date.
Source: VesperArcade