J. Kim Murphy editorIn today’s TV News Roundup, Peacock released the trailer for “Psych 2: Lassie Come Home,” and HBO announced the premiere date for its upcoming documentary “Showbiz Kids.”HBO has announced its upcoming documentary “Showbiz Kids” will premiere on July 14 at 9 p.m. Directed by former child actor Alex Winter, the film chronicles the unique experiences of working as a child actor in the entertainment industry through a combination of archival footage and interviews.