DR Jane, my CLOSER post didn't say much more than the fact that it will return in July. But I can add this: every year, creator James Duff chooses a theme for the season. Last season it was "family". The squad as a family, Brenda's family, Brenda and Fritz, and the season finale, with the boy who lost his brother but was taken in by Brenda's parents.
This season, the theme is "power" and we will be seeing some power struggles between Brenda and Taylor, among other things.
Also, there may be a character who is no longer with the squad. That's all I'm sayin'... Although savvy TV viewers may be able to hazard a guess...