James Gunn has been promising new and exciting changes ahead for Guardians of the Galaxy. He has been calling the sequel an overall more emotional movie. Considering they dropped hints to Starlord's father in the previous title, which plays a huge part in the comics, it is likely it will be about this storyline.
Chris Pratt (Peter Quill/Starlord) said that James Gunn’s idea for the sequel actually brought tears to the actor’s eyes. Of course he wasn’t able to divulge any further details, but it sounds like it will be an amazing story.
Guardians of the Galaxy 2 is set to release on May 5, 2017.