The Secret Missions Series will be out in September. It takes place in the regions of Wild Space. StarWars.com explains:

A Jedi general vanishes to a distant world, leaving his young apprentice and a group of untested clone troopers to complete a dangerous secret mission.

Trapped in the vast expanse of Wild Space in the far outskirts of the galaxy, this inexperienced team must look for assistance among a world of smugglers and bounty hunters. With few options and time running out, they'll need all the help they can get!