See the status box below for the most up to date return date info for Season 4 of Ben 10:
LATEST SHOW STATUS
Ben 10 Renewed for Season 4 By Cartoon Network
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About Ben 10
Cartoon Network is expanding the world of Ben 10 with a season four greenlight to take "hero time" to all-new levels. Ben, his cousin Gwen and Grandpa Max will venture to some of the world's most popular destinations including Italy, Japan and Mexico. Season four will continue to empower its worldwide fanbase through new alien transformations, action-packed battles with villains and more. Ben will also discover a special key that upgrades his beloved Omnitrix to add "Omni-Kix" armor enhancements to his aliens so he can power up during the action. Season four is expected to premiere globally beginning 2020.Source