oreo o's cereal to return in june May 31, 2017 17:54:23 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Vodkie on May 31, 2017 17:54:23 GMT wsvn.com/news/us-world/oreo-os-makes-us-comeback-returns-in-june/It's even listed on post's websitewww.postconsumerbrands.com/brands/oreo-os/