Apple TV has an exciting and packed summer lineup this year, anchored by a variety of compelling series. Here are three fan-favorite returning shows set to be among Apple’s biggest hits of the summer. #1: Silo season 3 Before Severance and Pluribus became mainstream hits, Silo was perhaps Apple TV’s most well-known sci-fi series. Silo season 3 debuts  Friday, July 3  with one episode, followed by weekly releases through September 4. With a new split-timeline plot that takes place simultaneously in the past and present, this season will delve deep into the origins of the silos. Here’s the official season 3 summary: Season three of “Silo” continues the saga of a dystopian society of 10,000 people living underground under mysterious circumstances, while revealing an origin story set centuries earlier. In the present, Juliette Nichols (Ferguson) survives her forced “cleaning” but returns with memory loss as the silo recovers from rebellion and faces a dangerous new threat.…