I guess I’d ask, would you rather update your GPA now, and have your App the day of your interview match your transcript, or would you rather the discrepancy right there when you’re sitting down to interview and they ask you why it’s different? For whatever it’s worth, I don’t think either situation is a dealbreaker, I’d just figure out a good explanation on what happened. I know many people who have made minor changes between invite and interview and all of them are flying Delta planes now.