How to proceed after finishing an internship?

I got super lucky and managed to snag a great internship for this last summer. I had a great time, got along with coworkers and my boss seemed to like me. I scheduled a performance review with him and everything was extremely positive. They've never had an intern before so early job offers seemed like a strange concept to my team. I graduate in December.

I had my last day on August 9, and left without a job offer. My boss said his boss was looking into it and that he would get back to me when he has any more updates. Anyone had any experience with how to follow up with an internship after not getting an immediate job offer?

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