Which sucks, honestly. Jackson seemed to have a major storyline in the show, and we didn't even get to hear much about his background, except for that he was adopted.
But in all fairness, I do wish Colton the best in his career. He's a good guy and wherever he goes, I'll be supporting him in any way I can. I'm gonna miss him on the show, but as long as he's happy, I'm happy.
There is a possibility he may return to the show whenever possible, although I'm thinking after this season he will probably be a recurring character, if not a minor character.