Netflix's The Crown has grown in popularity since its launch as the TV series followed the journey of Queen Elizabeth II.The series has covered multiple key events in history, from Queen Elizabeth's reign to Princess Diana's royal presence - and as the next series is expected to cover Diana's tragic death, it's likely her two sons will soon have a prominent role.READ MORE: Prince Harry and Meghan Markle 'at odds' over 'endless TV interviews', says sourcePrince Harry and Prince William have already been mentioned, just not as leading roles, but that could change with upcoming series. And while the now US-based royal should expect a mention or two in the upcoming series, he has made his thoughts about the Megxit storyline quite clear.Royal expert Angela Levin believes Netflix will do what Harry has requested because they will want their "pint of blood" from the royals later on.