Part of Adult Swim's "April Fools Day" stealth premieres. The regular broadcast for S3 is somewhen in Summer 2020.
Edit:
The theories were right. 12oz Mouse returns July 20 at midnight on Adult Swim.
Shout by sp1tiVIP OG 13BlockedParent2020-04-16T15:10:23Z— updated 2020-06-26T10:57:49Z
Part of Adult Swim's "April Fools Day" stealth premieres. The regular broadcast for S3 is somewhen in Summer 2020.
Edit: